摘要大豆蛋白塑料作为一种新型的高分子材料,能有效的解决不可降解材料带来的环境污染,但因其加工性能很差,不能得到性能良好的大豆蛋白塑料,所以我们需要对大豆蛋白塑料进行增塑改性。本实验采用甘油、甘油/三乙醇胺、甘油/聚乙二醇400作为增塑剂,应用吸水率测试、傅里叶红外、热重以及力学性能考察增塑剂的种类和用量对大豆蛋白塑料结构和性能的影响。通过实验,我们得出,甘油增塑的大豆蛋白塑料,甘油含量越多,拉伸强度越低,断裂伸长率越高;甘油、三乙醇胺增塑的大豆蛋白塑料,吸水率远高于甘油增塑的大豆蛋白塑料,拉伸强度与甘油相似,断裂伸长率远低于甘油;甘油/聚乙二醇400增塑的大豆蛋白塑料,吸水率低于甘油增塑的大豆蛋白塑料,拉伸强度大于甘油,断裂伸长率却低于甘油增塑的大豆蛋白塑料。28659
关键词 大豆蛋白塑料 甘油 聚乙二醇400 三乙醇胺
毕业论文设计说明书外文摘要
Title Study on plasticity of soy protein plastics
Abstract
As a renewable biopolymer, soy protein has been considered as an alternative to solve serious environmental pollution, due to its poorer processability, soy protein plastics do not show satisfactory mechanical properties and water resistance, hence, efforts like plasticizers have been made to improve the processability. In this work, glycerol, glycerol/triethanolamine (TEA), glycerol/polyethylene glycol 400 (PEG400) plasticized soy proteins were prepared. Influences of different plasticizer types and contents on the structure and properties of the resulting plastics were investigated using water absorption test, FT-IR, TGA, and mechanical tests. Through the experiment, we concluded that as the glycerol content increased, soy protein plastics exhibited lower the tensile strength and higher elongation at break; Glycerol/TEA plasticized soy protein plastics possessed higher water absorption, similar tensile strength and lower elongation at break compared to glycerol plasticized soy protein plastics; Glycerol/PEG400 plasticized soy protein plastics have lower water absorption, higher tensile strength and lower elongation at break compared to glycerol plasticized soy protein plastics.
Keywords Soy protein plastics glycerin PEG400 TEA
目录
1绪论 1
1.1大豆蛋白塑料的研究状况 1
1.3 大豆蛋白塑料的应用 4
1.4本课题的研究意义与研究内容 4
2大豆蛋白塑料的制备 6
2.1实验仪器设备及材料 6
2.1.1 实验仪器 6
2.2.实验方法和内容 7
2.3表征方法 8
3实验结果与讨论 10
3.1增塑剂含量对吸水率、可溶物损失率的影响 10
3.2大豆蛋白塑料红外谱图谱 12
3.3热重分析 16
3.4 大豆蛋白塑料力学分析 18
4结论 20
致谢 21
参考文献 22
1绪论
高分子材料具有易加工、来源广、应用范围广等特点,20世纪以来得到迅速发展。高分子材料广泛应用于各行各业,促进经济的发展,改善人们的生活环境,生活中,我们能随处看到高分子材料,如杯子、塑料袋等等。过去,人们对高分子材料的处理方法为焚烧、填埋,可研究发现,焚烧高分子材料会污染空气,填埋不仅不宜降解,而且会污染地下水,人们越来越重视如何解决高分子材料带来的环境污染,同时也着手研究减少环境污染的可降解生物材料,天然高分子受到人们的青睐。 大豆蛋白塑料的增塑性研究+文献综述:http://www.751com.cn/huaxue/lunwen_23589.html