• 材料科学与技术 • Previous Articles     Next Articles

Thermoplastic starch plasticized by mix of urea and glycerol

YAO Dongming,HE Hezhi   

  1. The Key Laboratory of Polymer Processing Engineering of Ministry of Education,National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Online:2011-09-20 Published:2011-09-05

尿素甘油共塑化热塑性淀粉

姚东明,何和智   

  1. 华南理工大学聚合物成型加工工程教育部重点实验室,聚合物新型成型装备国家工程研究中心,广东 广州 510640

Abstract:

Through testing of mechanical propertiesand crystallization and SEM testing of different urea and glycerol co-plasticized TPSthe optimum weight ratio starch/urea/glycerol was 100/20/20. The tensile modulus of the TPS could reach 0.959 MPathe elongation was up to 209%recrystallization of urea did not occurand the TPS had a good plasticization effectin RH = 33% humidity environment preserved for one week.

摘要:

采用尿素、甘油为塑化剂制备热塑性淀粉材料,并对改性后淀粉的力学性能、塑化效果以及结晶状况进行了探索,考察了尿素与甘油不同比例对热塑性淀粉塑化效果的影响,得出热塑性淀粉最佳塑化质量比为淀粉/尿素/甘油为100/20/20。在RH33%的湿度环境保存1周,上述比例塑化的热塑性淀粉拉伸模量可达0.959 MPa,断裂伸长率达209.64%,且热塑性淀粉内未出现尿素自结晶,淀粉塑化效果良好。