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  • Open Access

    ARTICLE

    Plywood Bio-Adhesives by Oxidized Lignin Urea Bridged with Oxidized Starch

    Hamed Younesi-Kordkheili1,*, Antonio Pizzi2,*

    Journal of Renewable Materials, Vol.14, No.1, 2026, DOI:10.32604/jrm.2025.02025-0179 - 23 January 2026

    Abstract The aim of this research was to synthesize a new totally bio wood adhesive entailing the use of oxidized starch (OST), urea, and oxidized lignin (OL). For this reason, non-modified (L) and oxidized lignin (OL) at different contents (20%, 30%, and 40%) were used to prepare the starch-urea-lignin (SUL) and starch-urea-oxidized lignin (SUOL) resin. Sodium persulfate (SPS) as oxidizer was employed to oxidize both starch and lignin. Urea was just used as a low cost and effective crosslinker in the resin composition. The properties of the synthesized resins and the plywood panels bonded with them… More > Graphic Abstract

    Plywood Bio-Adhesives by Oxidized Lignin Urea Bridged with Oxidized Starch

  • Open Access

    ARTICLE

    Phytochemicals, Antioxidation, and Heat Stability of Aqueous Extracts from Cherry (Prunus serrulata) Petals

    Sy-Yu Shiau*, Shuting Ni, Yanli Yu, Songling Cai, Wenbo Huang

    Phyton-International Journal of Experimental Botany, Vol.94, No.10, pp. 3047-3060, 2025, DOI:10.32604/phyton.2025.070289 - 29 October 2025

    Abstract Consumers are increasingly demanding natural colorants that are safe and offer health benefits. In addition to their ornamental characteristics, Kanzan cherry (KC) blossoms present a promising source of red-hued natural colorants and functional bioactive substances. This research utilized distilled water to extract KC petals (KCP) and their ground powders (KCPP) under varying temperatures (30°C–90°C) and times (30–180 min). The total monomeric anthocyanins (TMAC) and total phenolics (TPC) in the extracts were evaluated via the pH differential and Folin–Ciocalteu methods. Antioxidant capacities were assessed by DPPH free radical scavenging ability and reducing power. Results indicated that… More >

  • Open Access

    ARTICLE

    RAPD Marker Associations and Antioxidant Enzyme Responses of Houttuynia cordata Germplasms under Lead Stress

    Yi Yan1,2,#, Min He1,2,#, Feifeng Mao3, Xinyu Zhang4, Liyu Wang5, Jingwei Li1,2,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.10, pp. 3003-3021, 2025, DOI:10.32604/phyton.2025.069166 - 29 October 2025

    Abstract Houttuynia cordata, a characteristic edible and medicinal plant in southwestern China, is prone to absorbing lead (Pb2+). Excessive consumption may lead to Pb2+ accumulation in the human body, which has been linked to serious health risks such as neurotoxicity, kidney damage, anemia, and developmental disorders, particularly in children. Therefore, the development of molecular markers associated with Pb2+ uptake and the investigation of the plant’s physiological responses to Pb2+ pollution are of great significance. In this study, 72 H. cordata germplasms were evaluated for Pb2+ accumulation after exogenous Pb2+ treatment. A significant variation in Pb2+ content was observed among the germplasms, indicating… More >

  • Open Access

    ARTICLE

    Facile Crosslinking of Hardwood Kraft Lignin for Sustainable Bio-Based Wood Adhesives

    Ega Cyntia Watumlawar1, Byung-Dae Park1,*, Long Yang2, Guanben Du2

    Journal of Renewable Materials, Vol.13, No.5, pp. 829-848, 2025, DOI:10.32604/jrm.2025.02024-0056 - 20 May 2025

    Abstract As the most abundant aromatic bio-based polymer, lignin has great potential as a sustainable feedstock for building crosslinked thermoset polymers as bio-based adhesives. However, the potential of hardwood kraft lignin (HKL) is limited due to its poor crosslinking reactivity. Hence, for the first time, the present study reports the facile oxidation of HKL involving a redox reaction with silver-ammonia complexes ([(AgNH3)2]+), primarily focusing on oxidation to produce reactive quinones and promote C–C linkages during reaction. This study aims to increases reactivity of oxidized HKL for effective crosslinking with monoethanolamine (MEA) for the development of bio-based wood… More > Graphic Abstract

    Facile Crosslinking of Hardwood Kraft Lignin for Sustainable Bio-Based Wood Adhesives

  • Open Access

    ARTICLE

    Polymer Resins Synthesized via the Michael 1,4-addition from Tall Oil Fatty Acids Using Various Epoxidation Techniques

    Aiga Ivdre*, Ralfs Pomilovskis, Arnis Abolins

    Journal of Renewable Materials, Vol.13, No.2, pp. 349-361, 2025, DOI:10.32604/jrm.2024.056820 - 20 February 2025

    Abstract Studies on the use of renewable materials for various applications, including polymers, have gained momentum due to global climate change and the push towards a circular economy. In this study, polymer resins were developed through Michael 1,4-addition. The precursors were synthesized from tall oil-based acetoacetates derived from epoxidized tall oil fatty acids or their methyl esters. Two different epoxidation methods were employed: enzymatic epoxidation of tall oil fatty acids and ion-exchange resin epoxidation of tall oil fatty acid methyl esters. Following oxirane opening and transesterification with trimethylolpropane, further esterification or transesterification was carried out to… More >

  • Open Access

    PROCEEDINGS

    In-Situ Carbide-Reinforced NiCoCr Medium-Entropy Alloy Manufactured by Laser Powder Bed Fusion; Fabrication, Microstructure, Mechanical Property, and High Temperature Oxidation Behavior

    Kee-Ahn Lee1,*, So-Yeon Park1, Soo-Bin Kim1, Young-Kyun Kim1,2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.012196

    Abstract NiCoCr medium-entropy alloys (MEAs) with controlled interstitial C contents were fabricated by using powder bed fusion-type additive manufacturing (AM) process. And the microstructure, mechanical properties, and high temperature oxidation resistance of in-situ carbide-reinforced NiCoCr Medium alloy were investigated. The initial microstructure shows that both AM-built interstitial C-doped MEAs had a heterogeneous grain structure and epitaxial growth grains along the building direction. The analysis of electron channeling contrast images showed a large amount of nano-sized precipitates (in-situ precipitates) distributed at the sub-structure boundaries formed by a dislocation network, and a large number of stacking faults were simultaneously observed inside the sub-structure. A… More >

  • Open Access

    PROCEEDINGS

    Environmental Influences on Biological Membranes

    Choon-Peng Chng1, Changjin Huang1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.011464

    Abstract Biological membranes play crucial roles in cellular functions, serving as dynamic interfaces that regulate the passage of molecules and signals between the cell and its environment. Understanding how these membranes respond to environmental stimuli is paramount in elucidating cellular adaptation and survival mechanisms. In this talk, we will present our recent studies on the structural and mechanical changes of biological membranes in response to two different environmental factors, including the presence of reactive oxygen species (ROS) and dehydration. Through systematic molecular dynamics simulations, we have revealed a dynamic interplay between membrane components, membrane mechanics and… More >

  • Open Access

    PROCEEDINGS

    Three-Dimensionally Printed Transition Metal Catalysts with Hierarchically Porous Structures for Wastewater Purification

    Sheng Guo1,2,*, Mengmeng Yang1, Yao Huang2, Xizi Gao1, Chao Cai3,*, Kun Zhou4,5,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.30, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.012655

    Abstract 3D printing technology has demonstrated considerable potential in wastewater remediation. Zero-valent metal (ZVM) has been recognized as an efficient catalyst facilitating the organic pollutant degradation in water. However, owing to its inclination toward oxidation and aggregation, the practical utilization of ZVM remains a challenge. Herein, we have employed 3D printing techniques to fabricate hierarchically porous ZVM, such as zero-valent copper and zero-valent iron, which exhibit a high level of printing precision and commendable resistance to compression. These 3D-ZVM catalysts can effectively activate peroxymonosulfate (PMS), thereby degrading various organic pollutants, including tetracycline, ciprofloxacin, rhodamine B, and… More >

  • Open Access

    PROCEEDINGS

    The Effect of Fatigue Loading Frequency on the Fatigue Crack Growth Behavior of a Nickel-Based Superalloy: Experimental Investigation and Modelling

    Yi Shi1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.012366

    Abstract The Nickel-based superalloy is wieldy applied in hot components of aero turbine engine due to its superior mechanical property at elevated temperature. However, the working condition of engine hot components are severe and thus the effect of high temperature, oxidation and time-dependent loading on fatigue crack growth behavior should be considered in structure analysis. In this study, first the effect of environment was experimentally investigated. Stand compact tension (CT) specimens under different temperatures and loading frequencies were tests to evaluate the role of temperature and time-dependent effect on fatigue crack growth. Results show that if… More >

  • Open Access

    PROCEEDINGS

    Lifetime Prediction of Polyethylene Pipe Due to Aging Failure in Hydrogen-Blended Natural Gas Environment

    Dukui Zheng1, Jingfa Li1,*, Bo Yu1, Zhiqiang Huang1, Yindi Zhang1, Cuiwei Liu2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.011669

    Abstract In the low and medium pressure urban gas pipe network, transporting the hydrogen-blended natural gas through polyethylene pipe is an important means to realize the large-scale delivery and utilization of hydrogen-blended natural gas. However, due to the characteristics of polymer material, polyethylene pipes will experience aging phenomenon, which will lead to the deterioration of performance and eventually result in brittle damage and failure. Therefore, it is of great significance to analyze and predict the lifetime of polyethylene pipe due to the aging in the hydrogen-blended natural gas environment to ensure the safe transportation. In this… More >

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