PREPARATION AND PROPERTIES OF POLY (ALPHA-METHYL-ALPHA-ETHYL-BETA-PROPRIOLACTONE)

被引：22

作者：

DUCHESNE, D

PRUDHOMME, RE

机构：

[1] Groupe de recherche sur les macromolécules, Départment de chimie, Université Laval, Québec 10

来源：

POLYMER | 1979年 / 20卷 / 10期

关键词：

D O I：

10.1016/0032-3861(79)90143-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly (α-methyl-α-ethyl-β-propiolactone) (PMEPL) has been prepared by anionic polymerization. PMEPL is a semi-crystalline polymer having a melting point of 393 K, a glass transition temperature of 260 K and a low degree of crystallinity. It presents upon stretching an α → β transition which is reversible upon annealing, and which is quite similar to the α-β transition found in other polylactones. Its dynamic mechanical properties show a β relaxation peak at 290 K, and indicate the presence of a γ relaxation region around 120 K. © 1979.

引用

页码：1199 / 1203

页数：5

共 37 条

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