数形结合讲解高分子溶液的相分离  

Teaching of Phase Separation of Polymer Solution by Number-shape Combination

作　　者：范吉昌 郭福全 乔玉辉 胡鹏飞 FAN Ji-chang;GUO Fu-quan;QIAO Yu-hui;HU Peng-fei(Department of Material Science and Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China)

机构地区：[1]洛阳理工学院材料科学与工程学院,洛阳471023

出　　处：《高分子通报》2024年第1期133-136,共4页Polymer Bulletin

基　　金：工程教育认证背景下《聚合物成型工艺学》教学改革的探索和实践,聚合物成型工艺学课程思政建设。

摘　　要：高分子溶液的相分离是高分子物理学习的难点之一。本文推导了高分子溶液发生相分离后混合自由能的变化,应用数学中凸凹函数的图像性质,通过数形结合的方式对高分子溶液的相分离一节进行讲解,绝大多数同学都能很好地理解,取得了较好的教学效果。The content of phase separation of polymer solution is one of the difficulties on polymer physics study.In this paper,the change of free energy of mixing of polymer solution after phase separation is deduced.By using the properties of image of convex and concave function,the section of phase separation of polymer solution is explained by method of number-shape combination,which can be well understood by most students and achieved good teaching effects.

关 键 词：高分子物理 高分子溶液 相分离 

分 类 号：O631-4[理学—高分子化学] G642[理学—化学]