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  • Open Access

    ARTICLE

    Steam Exploded Peanut Shell Fiber as the Filler in the Rigid Polyurethane Foams

    Zehui Ju1, Qian He1, Tianyi Zhan1, Haiyang Zhang1,*, Lin Sun1, Lu Hong1, Xinyi Shi2, Xiaoning Lu1,*

    Journal of Renewable Materials, Vol.7, No.11, pp. 1077-1091, 2019, DOI:10.32604/jrm.2019.07525 - 14 July 2021

    Abstract In this study, steam exploded peanut shell fibers (SE-PSFs) were utilized to fabricate with rigid polyurethane foam (RPUF) in order to improve sound absorption performance and hydrothermal weather resistance. Optimized method of SE treatment, RPUF preparation and flame retardant treatment were selected to prepare SE-PSF/RPUF composites in this experiment. Physical and mechanical properties including density, water absorption capacity, thickness swelling rate, compressive strength, thermal conductivity and average sound absorption coefficient of SE-PSF/RPUF were investigated and compared with the control (PRUF). The results showed that the density, water absorption capacity, thickness swelling rate and thermal conductivity More >

  • Open Access

    ARTICLE

    Novel Bio-based Flame Retardant Systems Derived from Tannic Acid

    Fouad LAOUTID1,*, Valeriia KARASEVA1, Lucie COSTES1, 2, Sylvain BROHEZ2, Rosica MINCHEVA1, Philippe DUBOIS1

    Journal of Renewable Materials, Vol.6, No.6, pp. 559-572, 2018, DOI:10.32604/JRM.2018.00004

    Abstract In this study, tannic acid (TA) was investigated as flame retardant agent for PLA. Different strategies to modify its thermal degradation pathway have been explored in order to improve its charring effect. The first one consists in combining TA with organomodified montmorillonite (oMMT), and enables limiting the thermo-oxidative degradation of TA and promoting the formation of an effective char layer. Flame-retardant (FR) behavior of PLA-based composition has been found to be positively impacted by this combination since a reduction of the peak of Heat Release Rate (PHRR), more important than the value recorded when oMMT More >

  • Open Access

    ARTICLE

    Poly(lactic acid)-starch/Expandable Graphite (PLA-starch/EG) Flame Retardant Composites

    Mfiso Emmanuel Mngomezulu1, Adriaan Stephanus Luyt2, Steve Anthony Chapple3, Maya Jacob John3,4*

    Journal of Renewable Materials, Vol.6, No.1, pp. 26-37, 2018, DOI:10.7569/JRM.2017.634140

    Abstract This work reports on the effect of commercial expandable graphite (EG) on the flammability and thermal decomposition properties of PLA-starch blend. The PLA-starch/EG composites were prepared by melt-mixing and their thermal stability, volatile pyrolysis products and flammability characteristics were investigated. The char residues of the composites, after combustion in a cone calorimeter, were analyzed with environmental scanning electron microscopy (ESEM). The thermal decomposition stability of the composites improved in the presence of EG. However, the char content was less than expected as per the combination of the wt% EG added into PLA-starch and the %… More >

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