Home / Journals / JRM / Vol.11, No.3, 2023
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On the Cover


Aloe vera farm in Aruba with a Divi Divi tree and the yellow Aruban Cunucu house. The man is cutting the gel from the leaf skin (rind) and throwing on the ground. The leaf skin represents the waste that is produced. This waste has plenty of high value-added molecules.

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  • Open Access

    REVIEW

    Valorization of Aloe barbadensis Miller. (Aloe vera) Processing Waste

    Jeltzlin Semerel1, Nigel John1, Wim Dehaen2, Pedro Fardim3,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1031-1061, 2023, DOI:10.32604/jrm.2022.023449
    (This article belongs to this Special Issue: Renewable Material from Agricultural Waste and By-Product and Its Applications)
    Abstract Aloe vera plant is known worldwide for its medicinal properties and application in gel-based products such as shampoo, soap, and sunscreen. However, the demand for these gel-based products has led to a surplus production of Aloe vera processing waste. An Aloe vera gel processing facility could generate up to 4000 kg of Aloe vera waste per month. Currently the Aloe vera waste is being disposed to the landfill or used as fertilizer. A sustainable management system for the Aloe vera processing waste should be considered, due to the negative societal and environmental impacts of the currents waste disposal methods. Therefore,… More >

    Graphic Abstract

    Valorization of <i>Aloe barbadensis</i> Miller. (<i>Aloe vera</i>) Processing Waste

  • Open Access

    ARTICLE

    Towards Solar-Driven Formation of Robust and Self-Healable Waterborne Polyurethane Containing Disulfide Bonds via in-situ Incorporation of 2D Titanium Carbide MXene

    Sai Gong1,2,#, Shanglin Xiang1,#, Tingwei Wang1,*, Dongyu Cai2,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1063-1076, 2023, DOI:10.32604/jrm.2022.023011
    Abstract Waterborne polymers are vital for coating industry to reduce carbon emissions. However, formation of robust and self-healable films at ambient temperature remains a challenge owing to high energy cost of film formation process. This work reports a solar-driven film formation of waterborne polyurethanes (WPUs) containing disulfide bonds via in-situ incorporation of 2D titanium carbide (MXene) with ability to convert light to heat. Instead of directly mixed with WPUs, MXene is added to join the reaction with isocyanate-terminated pre-polymer before emulsification process. This approach not only prevents aggregation of MXene in water but stabilizes MXene against thermal degradation which is the… More >

    Graphic Abstract

    Towards Solar-Driven Formation of Robust and Self-Healable Waterborne Polyurethane Containing Disulfide Bonds via <i>in-situ</i> Incorporation of 2D Titanium Carbide MXene

  • Open Access

    REVIEW

    A Review of the Advances Made in Improving the Durability of Welded Wood against Water in Light of the Results of African Tropical Woods Welding

    Jean Jalin Eyinga Biwôlé1,4,*, Achille Bernard Biwolé1, Antonio Pizzi4,*, Joseph Zobo Mfomo1, César Segovia3, Atangana Ateba2, Evariste Fedoung Fongnzossie1, Sahbi Ouertani4,5, Xinyi Chen4, Bénoît Ndiwe1,2, Dieudonné Abessolo1,2, Pierre-Jean Meausoone4
    Journal of Renewable Materials, Vol.11, No.3, pp. 1077-1099, 2023, DOI:10.32604/jrm.2023.024079
    (This article belongs to this Special Issue: Renewable and Biosourced Adhesives-2021)
    Abstract Wood plays a major role in the production of furniture and wooden structures. Nevertheless, in this process, the massive use of adhesives and plural connectors remains a definite problem for health and the environment. Therefore, wood welding is a breakthrough in this respect. This paper reviews the applications of wood welding in furniture and construction and then examines advances in improving the durability of welded wood against water. Our contribution also highlights the need to join African tropical woods using the rotational friction welding technique. According to our results, these woods present interesting chemical singularities, which could provide solutions to… More >

  • Open Access

    ARTICLE

    Effect of Different Etching Time on Fabrication of an Optoelectronic Device Based on GaN/Psi

    Haneen D. Jabbar1,*, Makram A. Fakhri1,*, Mohammed Jalal Abdul Razzaq1, Omar S. Dahham2,3, Evan T. Salim4, Forat H. Alsultany5, U. Hashim6
    Journal of Renewable Materials, Vol.11, No.3, pp. 1101-1122, 2023, DOI:10.32604/jrm.2023.023698
    (This article belongs to this Special Issue: Carbon-Based Nanomaterials from Renewable Materials: Synthesis, Properties and Applications)
    Abstract Gallium nitride (GaN)/porous silicon (PSi) film was prepared using a pulsed laser deposition method and 1064 nm Nd: YAG laser for optoelectronic applications and a series of Psi substrates were fabricated using a photoelectrochemical etching method assisted by laser at different etching times for 2.5–15 min at 2.5 min intervals. X-ray diffraction, room-temperature photoluminescence, atomic force microscopy and field emission scanning electron microscopy images, and electrical characteristics in the prepared GaN on the Psi film were investigated. The optimum Psi substrate was obtained under the following conditions: 10 min, 10 mA/cm2, and 24% hydrofluoric acid. The substrate exhibited two highly cubic crystalline structures at (200)… More >

  • Open Access

    ARTICLE

    Development of a Novel Extrusion Process for Preparing Rice Straw/LLDPE Composites

    Huicheng Xu, Hao Xie, Weidong Shan, Weihong Wang*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1123-1135, 2023, DOI:10.32604/jrm.2022.023959
    (This article belongs to this Special Issue: Bio-based/Degradable Materials towards A Sustainable Future)
    Abstract Straw utilization is a key issue related to agricultural production and air pollution control. In this study, a novel extrusion process was proposed to improve the physical and mechanical properties of the straw-reinforced linear low-density polyethylene (LLDPE) composite. Instead of crushing the straw and mixing it with plastic matrix, the new method mixes straw with plastic matrix in its original form. The intact long rice straws were parallelly spread on the LLDPE film and then rolled up together into a prefabricated roll. The rolls experienced three extrusion processes as follows: (1) twin-screw melting, cooling and crushing, single-screw extruding; (2) twin-screw… More >

  • Open Access

    ARTICLE

    Fully Bio-Based Composites of Poly (Lactic Acid) Reinforced with Cellulose-Graft-Poly-(ε-Caprolactone) Copolymers

    Chengtao Gao1,2, Yang Wu3, Haibo Xie1,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1137-1152, 2023, DOI:10.32604/jrm.2022.021473
    (This article belongs to this Special Issue: Polylactide Based Biopolymeric Systems)
    Abstract

    Due to the increasing demand for modified polylactide (PLA) meeting “double green” criteria, the research on sustainable plasticizers for PLA has attracted broad attentions. This study reported an open-ring polymerization method to fabricate cellulose (MCC)-g-PCL (poly (ε-caprolactone)) copolymers with a fully sustainable and biodegradable component. MCC-g-PCL copolymers were synthesized, characterized, and used as green plasticizers for the PLA toughening. The results indicated that the MCC-g-PCL derivatives play an important role in the compatibility, crystallization, and toughening of the PLA/MCC-g-PCL composites. The mechanical properties of the fully bio-based PLA/MCC-g-PCL composites were optimized by adding 15 wt% MCC-g-PCL, that is, the elongation… More >

    Graphic Abstract

    Fully Bio-Based Composites of Poly (Lactic Acid) Reinforced with Cellulose-Graft-Poly-(ε-Caprolactone) Copolymers

  • Open Access

    ARTICLE

    Life Cycle Assessment Introduced by Using Nanorefrigerant of Organic Rankine Cycle System for Waste Heat Recovery

    Yuchen Yang1,2, Lin Ma1,2,*, Jie Yu1,2, Zewen Zhao1,2, Pengfei You1,2
    Journal of Renewable Materials, Vol.11, No.3, pp. 1153-1179, 2023, DOI:10.32604/jrm.2022.022719
    (This article belongs to this Special Issue: New Insights on Nanomaterials for Energy, Environmental and Agricultural Applications)
    Abstract The use of nanorefrigerants in Organic Rankine Cycle (ORC) units is believed to affect the cycle environment performance, but backed with very few relevant studies. For this purpose, a life cycle assessment (LCA) has been performed for the ORC system using nanorefrigerant, the material and energy input, characteristic indicators and comprehensive index of environmental impact, total energy consumption and energy payback time (BPBT) of the whole life cycle of ORC system using Al2O3/R141b nanorefrigerant were calculated. Total environmental comprehensive indexes reveal that ECER-135 index decrease by 1.5% after adding 0.2% Al2O3 nanoparticles to R141b. Based on the contribution analysis and… More >

  • Open Access

    ARTICLE

    Extraction and Characterization of Litopenaeus vannamei’s Shell as Potential Sources of Chitosan Biopolymers

    Che Engku Noramalina Che Engku Chik1, Amyra Suryatie Kamaruzzan1, Ahmad Ideris Abdul Rahim1, Fathurrahman Lananan2,3, Azizah Endut4, Siti Aslamyah5, Nor Azman Kasan1,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1181-1197, 2023, DOI:10.32604/jrm.2023.022755
    (This article belongs to this Special Issue: Bio-based Composite/Hybrid Structures and Components)
    Abstract Chitin is the second most abundant polysaccharide, produced mainly as an industrial waste stream during crustacean processing. Chitin can be derived into chitosan through the deacetylation process. Conversion of shrimp waste into chitosan via the deacetylation process could be considered a practical approach for shell waste remediation. In this study, chitosan’s physicochemical characteristics extracted from two types of Pacific white leg shrimp, L. vannamei’s shell (i.e., rough and smooth), were compared with commercial chitosan. The yield, moisture, ash, solubility, water and fat binding capacity were measured. The degree of deacetylation (DDA) was calculated using FTIR, and their chemical Structure was… More >

    Graphic Abstract

    Extraction and Characterization of <i>Litopenaeus vannamei</i>’s Shell as Potential Sources of Chitosan Biopolymers

  • Open Access

    ARTICLE

    Seaweed Fiber Fabricated with Agar Alkali-Free Extracted from Gracilaria lemaneiformis

    Yuzhi Wu1, Cunzhen Geng1,*, Chaochao Cui2, Zhefeng Xin2, Yanzhi Xia1, Zhixin Xue1,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1199-1208, 2023, DOI:10.32604/jrm.2022.022976
    (This article belongs to this Special Issue: Natural Fibre Composites: Design, Materials Selection and Fabrication)
    Abstract The sulfate groups in agar structure played a good role in the formation of fiber. However, commercially available agar is usually extracted from red algae by alkali treatment to decrease the content of sulfate group for the purpose of high gel strength. In this paper, an alkali-free method of agar extraction from Gracilaria lemaneiformis was proposed for the wet-spinning purpose. This method is environmentally friendly, reduces the extraction steps, saves energy, and reduces the production cost of agar fiber. The improved agar preparation process not only has higher agar yield, but also has higher molecular weight and sulfate group content,… More >

    Graphic Abstract

    Seaweed Fiber Fabricated with Agar Alkali-Free Extracted from <i>Gracilaria lemaneiformis</i>

  • Open Access

    ARTICLE

    High Water Resistance and Enhanced Mechanical Properties of Bio-Based Waterborne Polyurethane Enabled by in-situ Construction of Interpenetrating Polymer Network

    Henghui Deng1,2, Jingyi Lu1,2, Dunsheng Liang1,2, Xiaomin Wang1,2, Tongyao Wang1,2, Weihao Zhang1,2, Jing Wang3,*, Chaoqun Zhang1,2,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1209-1222, 2023, DOI:10.32604/jrm.2022.023371
    Abstract In this study, acrylic acid was used as a neutralizer to prepare bio-based WPU with an interpenetrating polymer network structure by thermally induced free radical emulsion polymerization. The effects of the content of acrylic acid on the properties of the resulting waterborne polyurethane-poly (acrylic acid) (WPU-PAA) dispersion and the films were systematically investigated. The results showed that the cross-linking density of the interpenetrating network polymers was increased and the interlocking structure of the soft and hard phase dislocations in the molecular segments of the double networks was tailored with increasing the content of acrylic acid, leading to enhancement of the… More >

    Graphic Abstract

    High Water Resistance and Enhanced Mechanical Properties of Bio-Based Waterborne Polyurethane Enabled by <i>in-situ</i> Construction of Interpenetrating Polymer Network

  • Open Access

    ARTICLE

    Properties and Hydration Mechanism of Cementitious Materials Prepared from Calcined Coal Gangue

    Zhaopeng Wang, Shaowu Jiu, Hui Li*, Kaifeng Zhang, Simeng Cheng
    Journal of Renewable Materials, Vol.11, No.3, pp. 1223-1236, 2023, DOI:10.32604/jrm.2022.022893
    Abstract The preparation of cementitious materials by replacing part of the cement with activated coal gangue is of great significance to the cement industry in terms of carbon reduction and coal-based solid waste utilization. For this paper, cementitious material was prepared by firing activated coal gangue under suspension conditions and batching it with limestone powder using Inner Mongolia coal gangue as raw material. The optimal ratio was determined by testing the strength changes of the cementitious material at 3, 7, and 28 days of hydration, and the hydration process and mechanism were explored by combining the pore structure, heat of hydration,… More >

  • Open Access

    ARTICLE

    Nano-CaO2 Promotes the Release of Carbon Sources from Municipal Sludge and the Preparation of Double-Network Hydrogels with High Swelling Ratios

    Yalin Li1,2,*, Yu Huang2, Lei Liu1, Haozhao Liu1, Haiyang He1, Dongxue Lu1, Tingting Dong1
    Journal of Renewable Materials, Vol.11, No.3, pp. 1237-1253, 2023, DOI:10.32604/jrm.2022.022972
    Abstract

    In this study, hydrogels were prepared from municipal sludge to recycle and realize the value-added utilization of the carbon components in this abundant waste material. The carbon sources were extracted from the municipal sludge using synthesised nano CaO2 as an oxidant, and the carbon sources were graft copolymerised with acrylic acid monomer using N, N′-methylenebisacrylamide as a crosslinking agent and ammonium persulfate as an initiator. The factors influencing the hydrogel preparation were investigated by single-factor experiments. Based on the results of the single-factor experiments, a hydrogel with a swelling ratio of up to 19768.4% at 12 h was prepared with… More >

    Graphic Abstract

    Nano-CaO<sub>2</sub> Promotes the Release of Carbon Sources from Municipal Sludge and the Preparation of Double-Network Hydrogels with High Swelling Ratios

  • Open Access

    ARTICLE

    A Comparative Investigation of the Biodegradation Behaviour of Linseed Oil-Based Cross-Linked Composites Filled with Industrial Waste Materials in Two Different Soils

    Eglė Malachovskienė1,*, Danguolė Bridžiuvienė1, Jolita Ostrauskaitė2, Justina Vaičekauskaitė2, Gailė Žalūdienė3
    Journal of Renewable Materials, Vol.11, No.3, pp. 1255-1269, 2023, DOI:10.32604/jrm.2022.023574
    (This article belongs to this Special Issue: Bio-based/Degradable Materials towards A Sustainable Future)
    Abstract The biodegradation of polymeric biocomposites formed from epoxidized linseed oil and various types of fillers (pine needles, pine bark, grain mill waste, rapeseed cake) and a control sample without filler was studied during 180 days of exposure to two types of forest soil: deciduous and coniferous. The weight loss, morphological, and structural changes of polymer composites were noticed after 180 days of the soil burial test. The greatest weight loss of all tested samples was observed in coniferous forest soil (41.8%–63.2%), while in deciduous forest soil, it ranged between 37.7% and 42.3%. The most significant changes in the intensities of… More >

  • Open Access

    ARTICLE

    Dynamic Behaviour of Pond Ash Mixed with Coir and Crumb Rubber

    Ashish Malik*, Sanjay Kumar Singh
    Journal of Renewable Materials, Vol.11, No.3, pp. 1271-1291, 2023, DOI:10.32604/jrm.2022.023084
    (This article belongs to this Special Issue: Renewable Material from Agricultural Waste and By-Product and Its Applications)
    Abstract An experimental program was conducted to determine the dynamic properties of pond ash (PA) and pond ash mixed with admixtures like crumb rubber (CR) and coir fiber (CF) which are wastes of different industries. Additives CR and CF were mixed separately with pond ash in a percentage ranging from 0%–20% at an interval of 5% and 0%–2% at an interval of 0.5% by weight of pond ash, respectively. Dynamic properties (Shear modulus, Number of cycles to initiate liquefaction, Degradation index and Damping ratio) for pond ash mixes were determined using strain-controlled cyclic tri-axial apparatus. The shear strain was kept constant… More >

  • Open Access

    ARTICLE

    Passivation of PEA+ to CsPbI3 (110) Surface States: From the First Principles Calculations

    Wei Hu1,2, Fengjuan Si3, Hongtao Xue1, Wensheng Li1, Jun Hu4, Fuling Tang1,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1293-1301, 2023, DOI:10.32604/jrm.2022.023095
    (This article belongs to this Special Issue: Perovskite Solar Cells)
    Abstract This work investigates the effect of passivation on the electronic properties of inorganic perovskite CsPbI3 materials by using first-principles calculations with density functional theory (DFT). The passivation effect after the addition of Phenylethylamine (PEA+ ) molecule to CsPbI3 (110) surface is studied. The results of density of states (DOS) calculations show that the CsPbI3 (110) surface model with I atom terminated reveals new electronic DOS peaks (surface states) near the Fermi level. These surface states are mainly due to the contribution of I-5p orbital and are harmful to the CsPbI3-based solar cells because they reduce the photoelectric conversion efficiency. The… More >

    Graphic Abstract

    Passivation of PEA<sup>+</sup> to CsPbI<sub>3</sub> (110) Surface States: From the First Principles Calculations

  • Open Access

    ARTICLE

    Comparative Study on Properties of PBAT/PBSA Film Modified by a Multi-Functional Epoxide Chain Extender or Benzoyl Peroxide

    Yanfeng Zhu1, Huidong Shi1, Qing Ju1, Dong Zhao1, Yucai Shen1,2,*, Tingwei Wang1,2,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1303-1319, 2023, DOI:10.32604/jrm.2022.023129
    Abstract Poly(butylene adipate-co-terephthalate) (PBAT) and poly(butylene succinate-co-adipate) (PBSA) blend films were prepared with different contents of a multifunctional epoxide chain extender Joncryl ADR-4468 (ADR) or benzoyl peroxide (BPO). The long-chain-branching (LCB) introduced by ADR and branched/crosslinked entanglement induced by BPO increased melt elasticity, viscosity and compatibility, as indicated by thermal properties, rheological and morphological analyses. It was found that the elongation at break and the tensile strength were significantly improved, due to the enhancement of compatibility and the interfacial adhesion by the incorporation of ADR or BPO. The best mechanical properties were obtained in PBAT/PBSA/ADR (60/40/0.3) (A4T6A0.3) and PBAT/PBSA/BPO (60/40/0.9) (A4T6B0.9)… More >

    Graphic Abstract

    Comparative Study on Properties of PBAT/PBSA Film Modified by a Multi-Functional Epoxide Chain Extender or Benzoyl Peroxide

  • Open Access

    ARTICLE

    Characteristic of Fresh and Harden Properties of Polyvinyl Alcohol Fibre Reinforced Alkali Activated Composite

    Yiguang Wang1,2, Zhe Zhang1, Xun Zhang1,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1321-1337, 2023, DOI:10.32604/jrm.2022.023266
    (This article belongs to this Special Issue: Potential Materials Towards Sustainable Construction)
    Abstract Fibre can enhance the mechanical properties of cement-based composites, but fibre also degrades their workability. However, the quantitative effects of fiber content and length-diameter ratio on alkali-activated materials are still unclear. Various aspect ratio, volume fraction of polyvinyl alcohol fibre (PVAF), and various water-binder ratio were employed to prepare a total of 26 groups of fibre reinforced alkali-activated composite (FRAAC). The influence of PVAF fibre factor (product of fiber volume fraction and length-diameter ratio) on flowability, compactness, strength, and crack fractal dimension of FRAAC was researched. The influence of water-binder ratio on the plastic viscosity of FRAAC was more significant… More >

  • Open Access

    ARTICLE

    Effect of Oils on SBS Modified Asphalt: Rheological Characteristics and Oxidation Aging

    Jing Xu1,2,*, Yuquan Yao3, Kai Zhang1, Jiangang Yang2, Jie Gao2, Jian Zhou2
    Journal of Renewable Materials, Vol.11, No.3, pp. 1339-1351, 2023, DOI:10.32604/jrm.2022.023270
    Abstract This study focuses on the effect of oils on rheology and oxidation aging of Styrene-Butadiene-Styrene modified asphalt (SBSMA) in the long term, after reducing one low-temperature Performance Grade (PG) of SBSMA by incorporating oils. Two oils, including corn-based bio-oil and re-refined engine oil bottom (REOB), were selected to enhance the low-temperature performance of SBSMA. All samples were subjected to Rolling Thin Film Oven (RTFO) aging and 20-h as well as 40-h Pressure Aging Vessel (PAV20 and PAV40) aging, prior to multiple stress creep recovery (MSCR), frequency sweep and Flourier transform infrared spectroscopy (FTIR) scanning. A good high-temperature performance of oil/SBS… More >

  • Open Access

    ARTICLE

    Current Status and Development Trends of Chinese Intelligent Furniture Industry

    Xianqing Xiong1,2,*, Xinyi Yue2, Zhihui Wu1,2
    Journal of Renewable Materials, Vol.11, No.3, pp. 1353-1366, 2023, DOI:10.32604/jrm.2022.023447
    (This article belongs to this Special Issue: Advances in Eco-friendly Wood-Based Composites: Design, Manufacturing, Properties and Applications)
    Abstract In this work, the current status, technical capabilities, and development trends of the Chinese intelligent furniture industry were in focus. Based on combining a literature review with field investigations and analysis of major scientific research projects in Zhejiang Province, China, an in-depth overview and discussion about previous experience, features, technologies, products and control methods in the intelligent furniture industry in China were conducted. The key technologies in current Chinese intelligent furniture industry include embedded systems, sensors, short-range wireless communication, artificial intelligence and intelligent interaction techniques. This work also mentions the challenges and opportunities for the industry, pointing out how to… More >

    Graphic Abstract

    Current Status and Development Trends of Chinese Intelligent Furniture Industry

  • Open Access

    ARTICLE

    Insight into Hydrolytic Stability and Tribological Properties of B-N Coordination Tung Oil-Based Lubricant Additive in Water

    Na Yao1,2, Haiyang Ding1,2,*, Mei Li2, Pengcheng Wang3, Shouhai Li1,2, Lina Xu2, Xiaohua Yang2
    Journal of Renewable Materials, Vol.11, No.3, pp. 1367-1381, 2023, DOI:10.32604/jrm.2022.023411
    (This article belongs to this Special Issue: Renewable Biomass as a Platform for Preparing Green Chemistry)
    Abstract A tung oil-based boron-nitrogen coordination polymer (TWE-BN) was specially designed and synthesized as a highly efficient water-based lubricant additive, which has been beneficial to both energy conservation and conducive to environmental protection. Its hydrolysis stability and tribological properties in water were investigated. To better research the lubricating properties, and thus to understand the interaction between the surface and the lubricating additives. Herein, both experimental and theoretical computations based on density functional theory (DFT) were performed. The addition of TWE-BN reduces the water friction coefficient and wear scar diameter, and the maximum non-seizure load increased from 93 to 726 N. Moreover, the… More >

    Graphic Abstract

    Insight into Hydrolytic Stability and Tribological Properties of B-N Coordination Tung Oil-Based Lubricant Additive in Water

  • Open Access

    ARTICLE

    Study on Hydrogen Storage Properties, Anti-Oxide Ability and Rate Limiting Step of ZrCr-Based Alloy after Introducing Cobalt as Additive

    Dongfang Huang1,4, Peng Lv1,2,3,4,*, Changlin Zhong1,2, Xingsheng Zhou1,2, Zhichen Liu4
    Journal of Renewable Materials, Vol.11, No.3, pp. 1383-1400, 2023, DOI:10.32604/jrm.2022.023261
    (This article belongs to this Special Issue: Advanced Renewable Energy Storage Materials and Their Composite: Preparation, Characterization and Applications)
    Abstract In this work, the microstructure, hydrogen storage properties, anti-oxide ability and rate limiting step of Zr(Cr1−xCox)2 (x = 0, 0.2, 0.4 and 0.6) alloys have been investigated. After studying the crystal structure, we found that all alloy samples could show C14-type phase but the alloy sample x = 0 could also show a small amount of Cr phase. Rietveld fitting showed that lattice parameter and unit cell volume of C14-type phase decreased with increasing x. After further research, it was clear that the first hydrogen absorption capacity decreased with increasing x. But introducing more Co content had a positive influence on the effective hydrogen… More >

  • Open Access

    ARTICLE

    Experimental Study of Moso Bamboo to-Steel Connections with Embedded Grouting Materials

    Shidong Nie1,2, Wei Fu1,2, Hui Wang1,2,*, Di Wu1,2,3, Min Liu1,2, Junlong Wang4
    Journal of Renewable Materials, Vol.11, No.3, pp. 1401-1423, 2023, DOI:10.32604/jrm.2022.023446
    Abstract Moso bamboos have attracted excessive attention as a renewable green building material to the concept of sustainable development. In this paper, the 20 bolted Moso bamboo connection specimens with embedded steel plates and grouting materials were designed according to connection configurations with different bolt diameters and end distance of bolt holes, and their bearing capacities and failure modes were analyzed by static tension tests. According to the test results of all connectors, the failure modes of the specimens are divided into four categories, and the effects of bolt diameter and bolt hole end distance on the connection bearing capacity and… More >

  • Open Access

    ARTICLE

    Classification of Principal Wood Species in China Based on the Physiomechanical Properties

    Jianyi Zhu1, Hui Peng1,2, Xiaoning Lu1,2, Jianxiong Lyu1,2,3, Tianyi Zhan1,2,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1425-1437, 2023, DOI:10.32604/jrm.2022.023464
    (This article belongs to this Special Issue: Research and Innovations in Engineered Timber and Mass Timber Products for Sustainable Built-Environment)
    Abstract Many tree species are planted in China with variable properties and usage. Toward exploring the structure-properties relationships of wood and classifying the species more reasonably, the physiomechanical properties of the domestic wood species in China were analyzed statistically. According to the correlation analysis, the mechanical properties were closely related to the wood density. Except impact toughness and cleavage strength, the correlation coefficients between mechanical properties and densities were more than 0.8. However, shrinkage properties showed fewer correlations with densities, and the coefficient was no more than 0.7. Primary component analysis was proved to be feasible to explore the information of… More >

  • Open Access

    ARTICLE

    MALDI ToF Investigation of the Reaction of Soy Protein Isolate with Glutaraldehyde for Wood Adhesives

    Qianyu Zhang1,2, Antonio Pizzi3, Hong Lei1,2,*, Xuedong Xi1,2,*, Ming Cao1,2, Long Cao1,2
    Journal of Renewable Materials, Vol.11, No.3, pp. 1439-1450, 2023, DOI:10.32604/jrm.2022.023535
    (This article belongs to this Special Issue: Renewable and Biosourced Adhesives-2021)
    Abstract Soy protein adhesives are currently a hot research topic in the wood panels industry for the abundant raw material reserves, reasonable price and outstanding environmental features. But their poor water resistance, low bonding strength and intolerance to mold are major drawbacks, so that proper modification before use is essential. Glutaraldehyde is one of the more apt cross-linking agents for soybean protein adhesives, which can effectively improve the bonding strength and water resistance of the adhesive. Equally, glutaraldehyde is also an efficient and broad-spectrum fungicide that can significantly improve the anti-fungal properties of a soy protein adhesive. In the work presented… More >

    Graphic Abstract

    MALDI ToF Investigation of the Reaction of Soy Protein Isolate with Glutaraldehyde for Wood Adhesives

  • Open Access

    ARTICLE

    Improvement of Cemented Gangue Backfill Material with Barium Hydroxide in Acid Mine Water

    Xiaoli Ye1,2, Yuxia Guo1,2,*, Peng Wang1,2, Yonghui Zhao1,2, Wenshuo Xie1,2, Guorui Feng1,2
    Journal of Renewable Materials, Vol.11, No.3, pp. 1451-1467, 2023, DOI:10.32604/jrm.2022.023528
    Abstract As a kind of green concrete, the mechanical properties and durability of cemented gangue backfill material (CGBM) will be affected if they are in acid mine water with sulfate ions in the long term. To improve the performance of CGBM in acid mine water with sulfate ions, CGBM specimens with different doses of barium hydroxide were immersed in sulfuric acid solutions of different concentrations for 270 days. The changes of mass, ultrasonic pulse velocity (UPV) and compressive strength of the specimens at different ages were analyzed. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to analyze the microstructure… More >

    Graphic Abstract

    Improvement of Cemented Gangue Backfill Material with Barium Hydroxide in Acid Mine Water

  • Open Access

    ARTICLE

    Effect of Natural Zeolite on Pore Structure of Cemented Uranium Tailings Backfill

    Fulin Wang*, Xinyang Geng, Zhengping Yuan, Shijiao Yang*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1469-1484, 2023, DOI:10.32604/jrm.2022.024994
    Abstract The use of some environmental functional minerals as backfill-modified materials may improve the leaching resistance of cemented uranium tailings backfill created from alkali-activated slag (CUTB), but these materials may participate in the hydration reaction of the cementitious materials, which could have a certain impact on the pore structure of the CUTB, thus affecting its mechanical properties and leaching resistance. In this paper, natural zeolite is selected as the backfill-modified material, and it is added to alkali-activated slag paste (AASP) and CUTB in cementitious material proportions of 4%, 8%, 12%, and 16% to prepare AASP mixtures and CUTB mixtures containing environmental… More >

  • Open Access

    ARTICLE

    Investigation of the Nd-Ce-Mg-Zn/Substituted Hydroxyapatite Effect on Biological Properties and Osteosarcoma Cells

    Suha Q. AL-Shahrabalee*, Hussein Alaa Jaber
    Journal of Renewable Materials, Vol.11, No.3, pp. 1485-1498, 2023, DOI:10.32604/jrm.2023.025011
    Abstract Cancerous diseases and diseases resulting from bacteria and fungi are some of the pressures that humans face. Therefore, the development of biomaterials that are resistant to cancerous diseases, bacteria, and fungi has become one of the requirements of the medical field to extend the life of the biomaterial and fight pathogens after implanting these materials inside the human body. One of the important biomaterials used in the field of orthopedics is hydroxyapatite. In this research, Nano substituted hydroxyapatite was prepared by the wet precipitation method, including replacing 5% of the calcium ions with neodymium, cerium, magnesium, and zinc ions in… More >

    Graphic Abstract

    Investigation of the Nd-Ce-Mg-Zn/Substituted Hydroxyapatite Effect on Biological Properties and Osteosarcoma Cells

  • Open Access

    ARTICLE

    Effects of Hydrothermal Environment on the Deformation of the Thin Bamboo Bundle Veneer Laminated Composites

    Ge Wang, Linbi Chen, Haiying Zhou*, Shanyu Han, Fuming Chen*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1499-1511, 2023, DOI:10.32604/jrm.2022.025130
    (This article belongs to this Special Issue: Natural Fibre Composites: Design, Materials Selection and Fabrication)
    Abstract To overcome warping in thin bamboo bundle veneer laminated composites (TBLC), their hydrothermal deformation characteristics were systematically investigated in this study. It was found that TBLCs accelerated the release of internal stress in the thickness direction in a hydrothermal environment, which increased their warpage. TBLCs showed increased warpage in the width and diagonal directions upon increasing the temperature. The warpage of Type E increased by 155.88% and 66.67% in the width and diagonal directions, respectively, when the temperature increased from 25 C to 100 C. The symmetrical TBLC with cross-lay-up and odd layers displayed better hydrothermal stability. We revealed that… More >

  • Open Access

    ARTICLE

    Study on Strength Reduction Law and Meso-Crack Evolution of Lower Layered Cemented Tailings Backfill

    Huazhe Jiao1,2,3, Wenxiang Zhang1,2,3,*, Yunfei Wang1,2,3,*, Xinming Chen1,2,3, Liuhua Yang1,2,3, Yangyang Rong1,2,3
    Journal of Renewable Materials, Vol.11, No.3, pp. 1513-1529, 2023, DOI:10.32604/jrm.2023.026008
    Abstract The green disposal of tailings solid waste is a problem to be solved in mine production. Cemented tailings filling stoping method can realize the dual goals of solid waste resource utilization and mined-out area reduction. However, the volume of the mined-out area of the open-pit method is larger than the filling capacity, resulting in the complex stratification of the underground backfill, and the strength of the backfill cannot meet the requirements. In this paper, according to the delamination situation, the specimens of horizontal and inclination angle layered cemented tailings backfill (LCTB) is made for a uniaxial compression test, and the… More >

  • Open Access

    ERRATUM

    Preparation of Kenaf Biochar and Its Adsorption Properties for Methylene Blue

    Xin Wan1,2,#, Zhigang Xia3,4,#, Xiaoli Yang1,2, Chengfeng Zhou2, Yuanming Zhang1,2, Haoxi Ben1,2, Guangting Han1,2, Wei Jiang1,2,*
    Journal of Renewable Materials, Vol.11, No.3, pp. 1531-1531, 2023, DOI:10.32604/jrm.2023.027109
    Abstract This article has no abstract. More >

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