设“1”法在《高分子化学》教学中的应用探讨

Discussion on Application of Method of Assuming“1”in Polymer Chemistry Teaching

探讨了设“1”法在推导线型等当量、线型非等当量及体型三种主要逐步聚合情况下聚合度的计算公式中的应用。本方法对关键参数如官能团转化率、官能团的当量比及平均官能度进行设1,摒弃了教材中通常出现的无关参数,更便于学生理解与记忆相关公式。笔者的教学实践表明这种方法不仅能被学生普遍接受,并且能显著提升学生对相关知识的理解与掌握,因而值得推广应用。

The application of the method of assuming“1”in deducing the degree of polymerization in three main cases of step polymerization including linear and equivalent,linear and non-equivalent,and three-dimensional step polymerization were discussed.In this method,key parameters such as the conversion ratio of functional groups,the equivalent ratio between functional groups,and the average functionality were assumed to be 1,which avoided irrelevant parameters usually used in textbooks,thus making it easier for students to comprehend and memorize related formulas.The author s teaching experience suggested that this method not only was generally acceptable for students but also could significantly improve their comprehension and grasping of related knowledge.Therefore,this method was worthy of spread.