In situ polymerized wood polymer composite: effect of additives and nanoclay on the thermal, mechanical properties

Materials Research

Rashmi R Devi¹  Tarun K Maji¹ 

[1] ,Tezpur University Department of Chemical Sciences Assam,India

关键词: co-polymers;    flame retardance;    mechanical properties;    organoclay;    thermogravimetric analysis;    transmission electron microscopy;   

DOI  :  10.1590/S1516-14392013005000071

来源: SciELO

【 摘 要 】

This study concerns the preparation and characterization of wood polymer nanocomposites based on impregnation of styrene acrylonitrile co-polymer-nanoclay intercalating system in presence of glycidyl methacrylate (GMA), a cross linking agent, and vinyl trichloro silane (VTCS) as additives into Simul (Bombex ceiba, L.), a soft wood. The effect of nanoclay and VTCS on the properties of the resultant wood polymer nanocomposites (WPNC) has been evaluated. FTIR spectroscopy shows the interaction among wood, polymers, GMA, nanoclay and VTCS. The penetration of polymer and nanoclay into the wood cell wall is supported by SEM study. The distribution of nanoclay in the SAN polymer matrix present within the wood cell wall has been evidenced by TEM study. TGA results show an improvement in the thermostability of the resultant composites. The inclusion of VTCS enhances the self extinguishing behaviour of the WPNC as revealed by limiting oxygen index (LOI) test. Due to treatment, the resultant WPNC exhibits an improvement in all the properties like water repellancy, dimensional stability, hardness, flexural, tensile and thermal stability compared to untreated wood.

【 授权许可】

CC BY   
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