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  • Open Access


    Properties of Different Chemically Treated Woven Hemp Fabric Reinforced Bio-Composites

    Arunjunai Raj Mahendran*, Günter Wuzella, Stefan Pichler, Herfried Lammer

    Journal of Renewable Materials, Vol.10, No.6, pp. 1505-1516, 2022, DOI:10.32604/jrm.2022.017835

    Abstract The objective of this work is to carry out the chemical treatment for the hemp fabrics in a closed vacuum system and to prepare bio-based composites using treated hemp fabrics. The change in surface tension of the treated fabrics was measured using contact angle measurement and the wetting behavior using a tensiometer. Bio-based composites were fabricated using bio-based epoxy resin and different chemically treated fabrics. The flexural strength and dynamic water absorption behavior of the composites were characterized. The acetylated fabrics showed very good wetting behavior, and the contact angle values were marginally low compared More > Graphic Abstract

    Properties of Different Chemically Treated Woven Hemp Fabric Reinforced Bio-Composites

  • Open Access


    Bio-Adhesives Combined with Lotus Leaf Fiber to Prepare Bio-Composites for Substituting the Plastic Packaging Materials

    Ke Shi1,2, Luyang Wang1,2, Ruige Qi1,2, Chunxia He1,2,*

    Journal of Renewable Materials, Vol.10, No.5, pp. 1257-1268, 2022, DOI:10.32604/jrm.2022.017891

    Abstract This work was aim to prepare a packing material from natural resources to reduce the environment pollution caused by plastics. Four bio-adhesives (guar gum, sodium alginate, agar and chitosan) were combined with lotus leaf fibers to prepare degradable composites, respectively. The mechanical properties, moisture absorption profiles and the thermal conductivity of the composites were studied and the cross section morphology and the thermal properties of the composites were analyzed. The Fourier-transform infrared spectroscopy (FTIR) results showed that the polar groups such as –OH and –COO in bio-adhesives can form hydrogen bond with –OH in lotus leaf More >

  • Open Access


    Effect of Recycling Cycles on the Mechanical and Damping Properties of Flax Fibre Reinforced Elium Composite: Experimental and Numerical Studies

    Sami Allagui1,2,*, Abderrahim El Mahi1, Jean-Luc Rebiere1, Moez Beyaoui2, Anas Bouguecha2, Mohamed Haddar2

    Journal of Renewable Materials, Vol.9, No.4, pp. 695-721, 2021, DOI:10.32604/jrm.2021.013586

    Abstract This manuscript deals with the effects of recycling on the static and dynamic properties of flax fibers reinforced thermoplastic composites. The corresponding thermoplastic used in this work is Elium resin. It’s the first liquid thermoplastic resin that allows the production of recycled composite parts with promising mechanical behavior. It appeared on the resin market in 2014. But until now, no studies were available concerning how it can be recycled and reused. For this study, a thermocompression recycling process was investigated and applied to Elium resin. Flax fiber-reinforced Elium composites were produced using a resin infusion… More >

  • Open Access


    Recent Trends in Preparation and Applications of Biodegradable Polymer Composites

    Haina1, Sagheer Gul1,*, Muhammad Awais1, Saira Jabeen2, Muhammad Farooq3

    Journal of Renewable Materials, Vol.8, No.10, pp. 1305-1326, 2020, DOI:10.32604/jrm.2020.010037

    Abstract This review efficiently covers the research progress in the area of polymer bio composites in perspective of the modern-day renewable materials. In the last decade, attraction towards the bio-composite based systems has been the topic of interest due to their potential as a substitute of conventional materials produced in important manufacturing industries. Recently, preparation of biocompatible and biodegradable polymer composites is an important achievement as an alternative of petrochemical based renewable products. Successful production of eco-friendly bio-composite materials have been achieved with natural fibers viz jute, bamboo, hair, flex, wool, silk and many others instead… More >

  • Open Access


    Structural Arrangement Effects of Mineral Platelets on the Nature of Stress Distribution in Bio-Composites

    S. Anup1, S. M. Sivakumar2, G. K. Suraishkumar3

    CMES-Computer Modeling in Engineering & Sciences, Vol.18, No.2, pp. 145-154, 2007, DOI:10.3970/cmes.2007.018.145

    Abstract Bone is a hierarchical bio-composite, and has a staggered arrangement of soft protein molecules interspaced with hard mineral platelets at the fine ultrastructure level. The investigation into reasons for high fracture toughness of bio-composites such as bone requires consideration of properties at the different levels of hierarchy. In this work, the analysis is done at the continuum level, but the properties used are appropriate to that of the level considered. In this way, the properties at the fine ultrastructure level of bone is considered in the stress distribution analysis of a platelet adjacent to the More >

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