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首页> 外文期刊>Journal of Applied Polymer Science >Morphology and properties of soy protein plastics modified with chitin
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Morphology and properties of soy protein plastics modified with chitin

机译：几丁质改性大豆蛋白塑料的形态和性能

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A series of bioplastics from isolated soy protein (SPI) and chitin (CH) was prepared with glycerol as a plasticizer by blending and compression molding. Their morphology and properties were investigated by wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), dynamical mechanical thermal analysis (DMTA), scanning electron microscopy (SEM), and tensile and water-absorption tests. The added CH as a filler cannot strongly interact with SPI molecules and, hence, this results in phase separation in blends. However, the rigid nature of the CH molecules enhanced the tensile strength and Young's modulus, but decreased the breaking elongation of the materials. When the CH content was higher than 10 wt %, the water absorption of the blends were obviously lower than that of the sheets without CH, resulting from the formation of a CH framework in the blends. Both soy protein and CH exhibit good biodegradability, biocompatibility, and bioactivity, and their composites may become a promising biomaterial. (C) 2003 Wiley Periodicals, Inc. [References: 19]
机译：以甘油为增塑剂，通过共混和压塑制备了一系列分离的大豆蛋白（SPI）和几丁质（CH）的生物塑料。通过广角X射线衍射（WAXD），差示扫描量热法（DSC），动态机械热分析（DMTA），扫描电子显微镜（SEM）以及拉伸和吸水测试研究了它们的形态和性能。作为填料添加的CH不能与SPI分子强烈相互作用，因此导致共混物中的相分离。然而，CH分子的刚性提高了抗张强度和杨氏模量，但降低了材料的断裂伸长率。当CH含量高于10wt％时，共混物的吸水率明显低于不含CH的片材的吸水率，这是由于在共混物中形成了CH骨架。大豆蛋白和CH均显示出良好的生物降解性，生物相容性和生物活性，它们的复合材料可能成为有前途的生物材料。 （C）2003 Wiley Periodicals，Inc. [参考：19]

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