摘要
用凝胶渗透色谱仪（ＧＰＣ）和示差折光仪（ＤＲ）、紫外光谱仪（ＵＶ）联机，测定共聚物的分子量（ＭＷ）、分子量分布（ＭＷＤ）和组成分布（ＣＤ）；建立含共聚组成、序列不均匀性对共聚物分子量影响的理论，并对联机测定结果进行修正；针对苯乙烯（Ｓｔ）／Ｎ－苯基马来酰亚胺（ＰＭＩ）共聚原理，提出共聚物分子量模型；运用该模型很好地解释了引发剂浓度、单体配比。
The molecualr weight(MW),molecular weight distribution(MWD) and composition distribution(CD) of copolymer are measured by the combination of gel permeation chromatography(GPC),differential refractometer(DR) and ultraviolet spectrophotometer(UV).The MW and MWD theory of copolymer is set up after consideration with the influence of composition and sequence distribution.The results of combined determination are modified with the theory.According to the copolymerization mechanism of styrene/N phenyl maleimide,a MW model of copolymer is proposed.With the model,the effects of initiator concentration,monomer fraction and molar conversion on the MW of copolymer can be explained very well.
基金
国家教委博士学科点专项科研基金
浙江省自然科学基金
