Effect of vinyl silane modification on thermal and mechanical properties of starch-polyvinyl alcohol blend.
DESIGNED MONOMERS AND POLYMERS(2019)
Abstract
This study aims to observe the effect of addition of silane coupling agent on polyvinyl alcohol and starch-PVA blend. Starch and PVA blend with citric acid addition was prepared. Silane-modified polymer was obtained by treating polyvinyl alcohol and starch-PVA blend with Trimethoxyvinylsilane. The blend has been tested against the canarium wood substrate for tensile strength. A further property like viscosity has also been evaluated. Analytical tests such as DSC and DMA proved the phenomenon of cross-linking, having shown an increase in glass transition temperature and area under the curve of tan delta. The efficient and novel method for polymerization of vinyl groups present in the PVA and PVA-starch blends has contributed to better adhesion on the wood substrate and also better cohesion between the chains.
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Key words
Starch,polyvinyl alcohol,citric acid,vinyltrimethoxysilane,polymerization
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