Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (1,176)
  • Open Access

    ARTICLE

    Preparation and Characterization of Potassium Monopersulfate/Ethyl Cellulose Microcapsules and Their Sustained Release Performance

    Qiaoguang Li1, Xuming Yan1, Jialong Chen1, Xugang Shu1,*, Puyou Jia2,*, Xiangjun Liang3

    Journal of Renewable Materials, Vol.9, No.10, pp. 1673-1684, 2021, DOI:10.32604/jrm.2021.014695

    Abstract Environmental cleaning is an important aspect of bacteria control. Ethyl cellulose microcapsules containing potassium monopersulfate (PMCM) were prepared by emulsified solvent diffusion method. The chemical structure and microstructure of the obtained PMCM was characterized by methods of Fourier transform infrared spectroscopy (FT-IR), optical microscopy, scanning electron microscopy and X-ACT energy dispersive X-ray spectroscopy. The SEM micrographs of the PMCM containing 21.6% of C, 46.8% of O, 10.7% of S and 19.4% of K was relatively smooth. Thermal stability, sustained release performance, and antimicrobial activity of PMCM were investigated. The results showed that the drug loading More >

  • Open Access

    ARTICLE

    Synthesis and Characterization of Green Potassium Nanoparticles from Sideroxylon Capiri and Evaluation of Their Potential Antimicrobial

    Judith Constantino-Alcazar1, Miguel Abud-Archila1, Benjamín Valdez-Salas3, Federico Gutierrez-Miceli1, Carlos Ceceña-Duran2, Blanca López-Valenzuela2, Daniel Gonzalez-Mendoza2,*,*

    Journal of Renewable Materials, Vol.9, No.10, pp. 1699-1706, 2021, DOI:10.32604/jrm.2021.015645

    Abstract In the present study, the green synthesis of potassium nanoparticles (K-NPs) was assessed using aqueous extract of Sideroxylon capiri. The potassium nanoparticles were analyzed by UV-visible spectroscopic techniques, X-ray spectrometers of energy dispersive (SEM-EDS) and dynamic light scattering. The results showed high values at 3.5 keV confirming the formation of potassium nanoparticles and the SEM analysis showed an agglomerated particles size between 360 to 200 nm with a spherical morphology. The K-NPs showed an effective antibacterial activity against the test organisms mainly with Bacillus cereus, Enterobacter aerogenes, Fusarium solani and Botrytis cinerea. However further studies about nanotoxicity of K-NPs are More >

  • Open Access

    ARTICLE

    An Experimental and Analytical Study on Cross-Laminated Bamboo Rocking Walls with Friction Dampers

    Qingfang Lv1, Tongchen Han1, Ye Liu2,*, Yi Ding1, Yujie Lu1

    Journal of Renewable Materials, Vol.9, No.10, pp. 1757-1779, 2021, DOI:10.32604/jrm.2021.015536

    Abstract

    Cross-laminated bamboo (CLB) have a high strength to weight ratio and stable bidirectional mechanical properties. Inspired by the investigation on cross-laminated timber (CLT) rocking walls, CLB rocking walls with conventional friction dampers (CFDs) are studied in this paper. To investigate the mechanical properties of the CLB rocking wall, seven tests are conducted under a cyclic loading scheme, and different test parameters, including the existence of the CFDs, the moment ratio, and the loading times, are discussed. The test results show a bilinear behavior of the CLB rocking wall. The small residual displacements of the CLB rocking

    More > Graphic Abstract

    An Experimental and Analytical Study on Cross-Laminated Bamboo Rocking Walls with Friction Dampers

  • Open Access

    ARTICLE

    Biodegradable Behavior of Waste Wool and Their Recycled Polyester Preforms in Aqueous and Soil Conditions

    Sudhakar Muniyasamy1,2,*, Asis Patnaik3,*

    Journal of Renewable Materials, Vol.9, No.10, pp. 1661-1671, 2021, DOI:10.32604/jrm.2021.014904

    Abstract Present study deals with the biodegradable behavior of individual components and their preforms of nonwoven biocomposites developed from waste wool fibers including coring wool (CW), dorper wool (DW) and recycled polyester fibers (RPET). A respirometric technique was employed to estimate the production of CO2 during the biodegradation experiments under soil and aqueous media conditions. Functional groups of test samples before and after biodegradation were analyzed using Fourier transform infrared spectroscopy (FTIR). Leaching chemicals such as formaldehyde (hydrolyzed) and Chromium VI (Cr VI) was also measured. The CO2 emission in wool fibers CW and DW indicated 90%… More >

  • Open Access

    ARTICLE

    The Measurement of the Local Slip in Bamboo-Reinforced Concrete Beams Using Moment-Curvature and Bond-Stress

    Muhtar*

    Journal of Renewable Materials, Vol.9, No.9, pp. 1631-1646, 2021, DOI:10.32604/jrm.2021.015452

    Abstract This paper presents a method of measuring local slip in bamboo-reinforced concrete beams. Local slips (so) are calculated by reducing the elongation of the bamboo reinforcement (ebo) with the elongation of the concrete (eco). The elongation of bamboo reinforcement (ebo) is determined in two ways, namely, read directly through a straingauge mounted on the bamboo reinforcement and calculated based on the force analysis or curvature moment as a control. The elongation of the concrete (eco) is calculated using force analysis or curvature moment. The process of calculating curvature moments and bond stress employs the Excel program. The steps… More > Graphic Abstract

    The Measurement of the Local Slip in Bamboo-Reinforced Concrete Beams Using Moment-Curvature and Bond-Stress

  • Open Access

    ARTICLE

    Visualizing Complex Anatomical Structure in Bamboo Nodes Based on X-ray Microtomography

    Elin Xiang1,2, Shumin Yang1,*, Chunjie Cao3, Xinge Liu1, Guanyun Peng4, Lili Shang1, Genlin Tian1, Qianli Ma1, Jianfeng Ma1

    Journal of Renewable Materials, Vol.9, No.9, pp. 1531-1540, 2021, DOI:10.32604/jrm.2021.015346

    Abstract In recent years, bamboo has been widely used in a broad range of applications, a thorough understanding of the structural characteristics of bamboo nodes is essential for better processing and manufacturing of biomimetic materials. This study investigated the complex anatomical structure for the nodes of two bamboo species, Indocalamus latifolius (Keng) McClure and Shibataea chinensis Nakai, using a high-resolution X-ray microtomography (μCT). The results show that the vascular bundle system in the nodal region of I. latifolius and S. chinensis is a net-like structure composed of horizontal and axial vascular bundles. Furthermore, the fiber sheath surrounding metaxylem vessels tended More >

  • Open Access

    ARTICLE

    Control on Gradient Adhesive Loading of Porous Laminate: Effects on Multiple Performance of Composites with Bamboo Bundle and Sliver

    Jianchao Deng1,2, Haiying Zhou2, Fuming Chen2, Shuangbao Zhang1,*, Ge Wang2,*

    Journal of Renewable Materials, Vol.9, No.9, pp. 1555-1570, 2021, DOI:10.32604/jrm.2021.015461

    Abstract Elementary units “bamboo bundle” and “bamboo sliver” were processed and cross-linked as “bamboo-bundle veneer (BBV)” and “bamboo-sliver veneer (BSV)” for preparation of laminated composites. The concept of “high-content-adhesive surface treatment” was raised to improve boards’ performance, rather than increasing adhesive absorption of every layer’s porous unit. That is, some BBVs experienced an extra “dipping & drying” to absorb more resin (named “HBBV”). The effect of the amount of knitting threads was also discussed for influencing BBV’s quality. Results indicated that light transmittance of BBVs decreased as the amount of threads added from 3 to 8,… More >

  • Open Access

    ARTICLE

    Structure, Dynamic-Mechanical and Acoustic Properties of Oil Palm Trunk Modified by Melamine Formaldehyde

    Tetti Novalina Manik1,2,*, Sulung Apria Nuki2, Nur Aini Fauziyah1, Mashuri1, Mochamad Zainuri1, Darminto1,*

    Journal of Renewable Materials, Vol.9, No.9, pp. 1647-1660, 2021, DOI:10.32604/jrm.2021.016089

    Abstract The performance of oil palm trunk wastes from Banjarbaru of South Kalimantan was improved with the help of chemical modification in a two-step treatment. The first was formalization with formaldehyde solution with varying pH, and the second was impregnation with melamine-formaldehyde resin under 5 bar pressure for an hour. In these processes, the samples were cured at 120°C for 10 min and then dried in an oven at (103 ± 2)°C in order to attain a moisture content of less than 6%. These treatments improved the physical properties (density, moisture content, and volume swelling), mechanical More > Graphic Abstract

    Structure, Dynamic-Mechanical and Acoustic Properties of Oil Palm Trunk Modified by Melamine Formaldehyde

  • Open Access

    ARTICLE

    Effect of Doped Alkali Metal Ions on the SO2 Capture Performance of MnO2 Desulfurization Materials at Low Temperature

    Xing Li1,3, Yugo Osaka2,*, Hongyu Huang1, Takuya Tsujiguchi2, Akio Kodama2

    Journal of Renewable Materials, Vol.9, No.9, pp. 1541-1553, 2021, DOI:10.32604/jrm.2021.015514

    Abstract Sulfur dioxide (SO2) emissions from diesel exhaust pose a serious threat to the environment and human health. Thus, desulfurization technology and the performance of desulfurization materials must be improved. In this study, MnO2 was modified with various alkali metal ions using the impregnation method to enhance its SO2 capture performance. The composites were characterized intensively by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, and Brunauer-Emmett-Teller theory. The SO2 capture performance of these composites were measured via thermogravimetry, and the effect of doping with alkali metal ions on the SO2 capture performance of MnO2 was investigated. Results… More >

  • Open Access

    ARTICLE

    Physical Properties of SiC Nanostructure for Optoelectronics Applications

    Mayyadah H. Mohsin1, Najwan H. Numan2, Evan T. Salim1,*, Makram A. Fakhri2,*

    Journal of Renewable Materials, Vol.9, No.9, pp. 1519-1530, 2021, DOI:10.32604/jrm.2021.015465

    Abstract A SiC nanofilms have been deposited and investigated on quartz and silicon substrates using pulsed laser deposition technique with the 300 pulses of Nd: YAG laser at two different laser wavelengths of 1064 nm and 532 nm. The structural, morphological, and optical properties of the deposited nanostructure SiC were prepared and characterized as a function of the wavelengths of the used laser. The structural result shows four different pecks at (111), (200), (220), and (311) planes related to Nano SiC. The transmission result presents that the optical energy gap value for the SiC nanostructure is More > Graphic Abstract

    Physical Properties of SiC Nanostructure for Optoelectronics Applications

Displaying 581-590 on page 59 of 1176. Per Page