Interfacial effect of surface modified TiO₂ and SiO₂ nanoparticles reinforcement in the properties of wood polymer clay nanocomposites

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• 作者：Rashmi R. Devi ; Tarun K. Maji ; ^{tkm@tezu.ernet.in}
• 关键词：Wood modification ; Mechanical properties ; Styrene acrylonitrile copolymer ; Impregnation ; Transmission electron microscopy ; Surface treatments
• 刊名：Journal of the Taiwan Institute of Chemical Engineers
• 出版年：2013
• 出版时间：May, 2013
• 年：2013
• 卷：44
• 期：3
• 页码：505-514
• 全文大小：1085 K

文摘

In this paper, surface modification and characterization of TiO₂, SiO₂ nanoparticles and their role on the physical properties of wood styrene acrylonitrile/nanoclay composites were investigated. Simul wood (Bombex ceiba L.) was used for preparation of wood polymer nanocomposites by impregnation of intercalating mixture of styrene acrylonitrile co-polymer (molar ratio 2:3) and combination of nanofillers TiO₂, SiO₂ and nanoclay. For the improvement in nanoparticles dispersion and increasing possible interactions among nanoparticles, polymer matrix and wood, the surface of TiO₂ and SiO₂ nanoparticles was modified with |mmethacryloyloxy trimethyl silane, a silane coupling agent. The characterization of the composites was done by using FT-IR, XRD, and TGA studies. The exfoliation of nanoclay and the homogeneous dispersion of nanoparticles in SAN polymer matrix on cell wall of wood was studied by TEM. The flexural, tensile properties were improved. UV stability was evaluated by photo-induced weight loss ( % ), FTIR, loss in mechanical properties, and scanning electron microscopy (SEM). The resultant wood polymer nanocomposites (WPNC) exhibited an improvement in hardness. The overall improvement in properties has been achieved for the wood/SAN sample treated with 0.5 % each of TiO₂, SiO₂ and nanoclay.