测定高聚物动力学结晶能力的非等温DSC方法  

The Nonisothermal Method for Determination of the Kinetic Crystallizability of Polymers by DSC

作　　者：张志英[1] 

机构地区：[1]天津纺织工学院材料科学系

出　　处：《应用化学》1997年第5期32-35,共4页Chinese Journal of Applied Chemistry

基　　金：天津市21世纪青年科学基金

摘　　要：研究了从非等温ＤＳＣ结晶曲线计算高聚物动力学结晶能力的方法．从高聚物非等温结晶动力学微分方程出发导出了计算高聚物动力学结晶能力的新方程．以含有不同催化剂的聚对苯二甲酸乙二酯为例，对其结晶进行了测试与计算．发现合理地选定最快结晶速率温度是计算动力学结晶能力的关键．The method for calculating kinetic crystallizability from the nonisothermal crystallization curves determined by using differential scanning calorimetry (DSC) has been investigated. A new equation was derived in terms of the differential equation for the nonisothermal crystallization. The kinetic crystallizability of polyethylene terephthalate containing different catalysts was calculated. The results indicate that the key to calculating the kinetic crystallizability lies in correctly selecting the temperature of maximum crystallization rate. The kinetic crystallizability obtained by this method gives the overall information of the polymer crystallization.

关 键 词：结晶 动力学结晶能力 DSC 高聚物 高分子 

分 类 号：O631.13[理学—高分子化学]