聚氧化乙烯梳状聚合物共混物的非等温结晶动力学

用ＤＳＣ方法对乙烯基甲醚／马来酸酐交替共聚物多缩乙二醇酯（ＣＢＰ） 聚氧化乙烯（ＰＥＯ）共混体系的非等温结晶动力学进行了研究，用Ｍａｎｄｅｌｋｅｒｎ、Ｚ Ｊ（Ｚｉａｂｉｋｉ Ｊｅｚｉｏｒｎｙ）、Ｏｚａｗａ和对Ｏｚａｗａ方法的一种修正方法对该体系进行了处理．结果表明：得到了一种既没有结晶又有较多ＥＯ单元含量的共混物，ＣＢＰ对ＰＥＯ的结晶有抑制作用．Ａｖｒａｍｉ指数随冷却速率的加快在３８～５７之间波动．Ｍａｎｄｅｌｋｅｒｎ方法求得的结晶动力学参数Ｚｃ随冷却速率的增加而增加，共混物的Ｇｃ值不随冷却速率的变化而变化，随ＰＥＯ含量增加而减少，处理结果表明而Ｚ Ｊ理论能较好地解释本体系的非等温结晶过程和机理．

NON-ISOTHERMAL CRYSTALLIZATION KINETICS OF COMBLIKE POLYMER/POLY(ETHYLENE-OXIDE) BLENDS

The kinetics of non isothermal crystallization of CBP/PEO blends have been investigated by differential scanning calorimetry.Based on the Mandelkern Ziabicki Jeziorny and Ozawa theories,the results show that a blend of non crystallization and rich EO units was obtained.CBP restrains crystallization of PEO.The kinetic crystallizability G c,Z c have been determined and discussed.Avrami exponent n is between 38～57 with increasing cooling rate.The values of Z c increase with cooling rate,the values of G c are constant with cooling rate.In sum,the results show disagreement with the Mandelkern and Ozawa theories.This system accord with Ziabicki theory.