创新型实验在高分子材料专业中的教学探索与实践

Teaching Exploration and Practice on the Innovation Experiment of Polymer Materials

论述了实验教学在高分子材料专业培养中的重要性,设计了一组创新型实验"原位熔融聚合制备聚乳酸/硫酸钙晶须(PLA/CSW)复合材料及其结构与性能表征"。在学生查阅文献、了解实验原理和设计实验路线的基础上,成功地制备了晶须均匀分散且界面结合良好的PLA/CSW复合材料,对其分子量、界面形貌以及结晶性能进行测试,并正确撰写实验报告。该创新型实验综合了有机化学、高分子化学、高分子物理、复合材料学、材料表面与界面及现代材料测试与分析技术等多门基础课和专业课的知识点,涉及到文献查询、资料分析、相互协作、集体讨论以及撰写实验报告等一系列环节,能够极大地提高了学生的综合能力并激发其科研兴趣,为今后进一步学习奠定基础。

The importance of experimental course in the major of polymer materials was discussed first, and then an innovation experiment was planned, which was named fabrication, structure and property of poly (lactic acid)/calcium sulfate whisker (PLA/CSW) composites via in-situ melt polycondensation. On the basis of students’ consulting literatures, understanding the basic theories and designing the proper experimental routes, PLA/CSW composites characterized by uniform dispersed whisker and well-bonded interfaces were prepared successfully. The molecular weight, interfacial morphology and crystallization behavior of the composites were measured, and finally a copy of well-organized experimental report for every student was required. This innovation experiment was related to various knowledge points derived from organic chemistry, polymer chemistry, polymer physics, composite materials, surface and interface of materials and modern materials analysis and testing technology, etc. The whole process was consisted of literature consultation, data analysis, collaboration, group discussion and writing the experimental reports. It gave the positive contributions to the improved all-round abilities of students, as will lay the solid foundation for their developments in future.