Green Composites From Wheat Protein Isolate and Hildegardia Populifolia Natural Fabric
Green Composites From Wheat Protein Isolate and Hildegardia Populifolia Natural Fabric
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DOI：
10.1002/pc.21055
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发表时间：
2011-03-01
影响因子：
5.2
通讯作者：
Li, R.
中科院分区：
文献类型：
--
作者：
Dani, Jagadeesh;Reddy, Jeevan Pradsad D.;Li, R.
以改性小麦分离蛋白(WPI)为基质，以单轴向天然织物白杨为增强体，制备了完全生物降解复合材料。在甘油增塑剂存在下，用戊二醛对WPI进行了交联。随后对这些聚合物复合材料的力学、形态(SEM)、热性能(TGA/DMA)和生物降解行为进行了评估。复合材料的拉伸强度和弯曲强度等力学性能随着织物负载量的增加而增加，当增加到10%时，复合材料的拉伸强度和弯曲强度有所下降。此外，织物的碱处理和偶联剂的使用提高了力学性能。复合材料断口的扫描电子显微镜表明，偶联剂促进了基体与增强体之间更好的结合。在热行为方面，结果表明，织物的存在影响了聚合物基质的热稳定性。用土埋法研究了复合材料的生物降解性，发现复合材料在35天内降解率可达95%。波兰姆。公司，32：398-406,2011。(C)2011年塑料工程师学会
Completely biodegradable composites were prepared using modified wheat protein isolate (WPI) as matrix and the uniaxial natural fabric Hildegardia Populifolia as reinforcement. The WPI was cross-linked with glutaraldehyde in the presence of glycerol plasticizer. These polymer composites were subsequently subjected to evaluation for their mechanical, morphological (SEM), thermal (TGA/DMA) properties, and biodegradation behavior. The mechanical properties such as tensile strength and flexural strength of the composite increased with increase in fabric loading up to 10% and decreased therefore. Further, the alkali treatment of the fabric and use of a coupling agent enhanced the mechanical properties. The scanning electron micrographs of the fractured surface of the composites indicated facilitation of better bonding between the matrix and reinforcement by the coupling agent. In case of thermal behavior, results indicated that the presence of fabric affected the thermal stability of polymer matrix. Biodegradability of the composites was also been studied by soil burial method, and the composites were found to degrade up to 95% in 35 days. POLYM. COMPOS., 32:398-406, 2011. (C) 2011 Society of Plastics Engineers