THERMAL AND MECHANICAL-PROPERTIES OF POLY(ESTERURETHANE) MODIFIED BY COPOLYAMIDE SEGMENTS OF VARIOUS MOLECULAR-WEIGHT

被引：9

作者：

AHN, TO

OH, MH

YOO, KS

JEONG, HM

机构：

[1] UNIV ULSAN,DEPT CHEM,ULSAN 680749,SOUTH KOREA

[2] SEOUL NATL UNIV,DEPT CHEM TECHNOL,SEOUL 151742,SOUTH KOREA

来源：

POLYMER INTERNATIONAL | 1995年 / 36卷 / 03期

关键词：

POLY(ESTERURETHANE); COPOLYAMIDE SEGMENTS; THERMAL AND MECHANICAL PROPERTIES;

D O I：

10.1002/pi.1995.210360303

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermoplastic polyurethane elastomers (TPUs) from diol-terminated poly(ethylene adipate) (PEA), 1,4-butanediol (ED) and 4,4'-diphenylmethanediisocyanate (MDI) were modified by copolymerizing with diamine-terminated nylon-6/6,6 copolyamide (CPA) oligomers. The effects of content and molecular weight of CPA segments on the thermal and mechanical properties of TPU were studied. PEA segments showed enhanced crystallization when some of the hard segments were replaced by CPA segments, showing weaker CPA-PEA interaction. The crystallinity of the hard segments was reduced, probably due to some interaction and phase mixing between hard and CPA segments. The modulus of TPU also decreased, more markedly with CPA segments of higher molecular weight.

引用

页码：239 / 245

页数：7

共 26 条

[1] STRUCTURE PROPERTY STUDIES OF POLYESTER-BASED AND POLYETHER-BASED MDI-BD SEGMENTED POLYURETHANES - EFFECT OF ONE-STAGE VS 2-STAGE POLYMERIZATION CONDITIONS [J].