改性淀粉纳米晶对聚丁二酸丁二醇酯的增强改性研究  

Study on Reinforcing of Poly(Butylene Succinate) by Modified Starch Nanocrystals

作　　者：高山俊[1] 尹凯凯[1] 

机构地区：[1]武汉理工大学材料科学与工程学院高分子材料与工程系,湖北武汉430070

出　　处：《化学与生物工程》2011年第5期37-41,共5页Chemistry & Bioengineering

摘　　要：通过2,4-甲苯二异氰酸酯(TDI)与淀粉纳米晶(NST)在有机溶剂中的接枝反应制备了TDI改性淀粉纳米晶(NTST),然后将其与聚丁二酸丁二醇酯(PBS)熔融共混制备了PBS/NTST复合材料。改性淀粉纳米晶的红外光谱分析、X-射线衍射分析、润湿性实验和接触角测试结果表明,接枝反应成功进行,改性后的淀粉纳米粒子具有亲油性、低表面能的特点。复合材料的红外光谱分析、力学性能测试、热性能分析和扫描电镜测试结果表明,改性淀粉纳米晶均匀分散在PBS基体中,复合材料的力学性能和热性能均得到提高。The modified starch nanocrystals（NTST） were prepared by the grafting reaction of toluene 2,4-diisocyanate（TDI） and starch nanocrystals in organic solvents,then NTST were used as fillers to prepare PBS/NTST nanocomposites by melt blending.NTST was characterized by infrared spectroscopy analysis,X-ray diffraction analysis,wettability tests and contact angle measurements.The results showed that the grafting reaction of TDI and starch nanocrystals was successful and NTST was hydrophobic with low surface energy.The PBS/NTST nanocomposites were characterized by FTIR,differential thermal analysis（DTA）,tensile tests and scanning electron microscopy.The results showed that NTST dispersed uniformly in the PBS matrix and the obtained nanocomposites were increased in thermal stability and in strength.

关 键 词：2 4-甲苯二异氰酸酯(TDI) 改性淀粉纳米晶(NTST) 聚丁二酸丁二醇酯(PBS) 熔融共混 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]