STUDY OF STRUCTURAL RELAXATION BY DYNAMIC-MECHANICAL METHODS IN POLY(METHYL METHACRYLATE)

被引：48

作者：

DIAZCALLEJA, R

RIBESGREUS, A

GOMEZRIBELLES, JL

机构：

[1] Univ Politecnica de Valencia, Spain

来源：

POLYMER | 1989年 / 30卷 / 08期

关键词：

Heat Treatment - Annealing - Polymers - Aging - Relaxation Processes;

D O I：

10.1016/0032-3861(89)90212-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A systematic study of the influence of ageing on the dynamic properties of amorphous poly(methyl methacrylate) (PPMA) has been made. During isothermal annealing a decrease in loss tangent and an increase in modulus with ageing time in a broad zone between 30 and 90°C have been observed. The ageing in the zone in the β peak has been investigated and an interpretation of the results is proposed on the basis of recent theories. The existence of the memory effect after two-jump experiments has been proved.

引用

页码：1433 / 1438

页数：6

共 20 条

[1] VOLUME AND ENTHALPY RELAXATION IN POLYSTYRENE [J].