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Jutarat Prachayawarakorn Pornnipa Ruttanabus Pimvilai Boonsom 《Journal of Polymers and the Environment》2011,19(1):274-282
Biodegradable polymer was prepared as thermoplastic starch (TPS) using rice and waxy rice starches. In order to increase mechanical
properties and reduce water absorption of the TPS, cotton fiber was incorporated as the fiber reinforcement into the TPS matrix.
The effect of cotton fiber contents and lengths on properties of the TPS was examined. Internal mixer and compression molding
machine were used to mix and shape the samples. It was found that the thermoplastic rice starch (TPRS) showed higher stress
at maximum load and Young’s modulus but lower strain at maximum load than the thermoplastic waxy rice starch (TPWRS). In addition,
stress at maximum load and Young’s modulus of both TPRS and TPWRS increased significantly with the addition of the cotton
fiber. Cotton fiber contents and lengths also affected mechanical properties of the TPRS and TPWRS composites. Moreover, water
absorption of the TPRS and TPWRS composites decreased by the use of the cotton fibers. FT-IR and XRD techniques were used
to study a change in functional group and crystallinity of the thermoplastic starch composites. Morphological, thermal and
biodegradable properties of different thermoplastic starch composites were also investigated. 相似文献
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