THE INFLUENCE OF MOLECULAR-WEIGHT ON THE REGIME CRYSTALLIZATION OF LINEAR POLYETHYLENE

被引：61
|
作者：
FATOU, JG
MARCO, C
MANDELKERN, L
机构：
[1] FLORIDA STATE UNIV,INST MOLEC BIOPHYS,TALLAHASSEE,FL 32306
[2] FLORIDA STATE UNIV,DEPT CHEM,TALLAHASSEE,FL 32306
来源：
POLYMER | 1990年 / 31卷 / 09期
基金：
美国国家科学基金会;
关键词：
crystallization kinetics; linear polyethylene; regime crystallization;
D O I：
10.1016/0032-3861(90)90186-3
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Overall crystallization rates of polyethylene fractions, ranging in molecular weight from 1.95 × 104 to 8.0 × 106, have been measured over the temperature range from 114 to 128°C. From kinetic analysis of these data, three distinct regimes have been detected. The assignment of the regimes has been made based on several mechanistic situations, which lead to the same temperature coefficient. The influence of molecular weight on the regime behaviour has been found to be very profound. It changes the type of regime that is observed, the slope of the temperature coefficient in regime II and the location of the transition temperature from one regime to another. © 1990.
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页码：1685 / 1693
页数：9
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