INVESTIGATIONS OF THE HARDNESS AND THERMAL-PROPERTIES OF COPOLY(ETHER-ESTER)S CONTAINING SEGMENTS OF DIFFERENT MOLECULAR-WEIGHTS

被引：18

作者：

SLONECKI, J

机构：

[1] Technical University of Szczecin, Institute of Chemical Technology, 70-310 Szczecin

来源：

POLYMER | 1990年 / 31卷 / 08期

关键词：

copoly(ether-ester)s; hardness; oligooxyethylenediol; poly(butylene-terephthalate); polycondensation;

D O I：

10.1016/0032-3861(90)90151-N

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Copoly(ether-ester)s (CPPE) consisting of alternately arranged oligooxyethylene (PEO) soft segments of molecular weights 400 to 6000 and tetramethylene-terephthalate (4GT) hard segments was studied. The content of soft segments of copoly(ether-ester)s obtained varied over a wide range. Differential scanning calorimetry and hardness measurements in the temperature range from -70 to +150°C were carried out. At temperatures close to the melting point a significant change in hardness of CPEE occurs. This does not occur in those elastomers for which the enthalpy of melting (Hm) of the soft segments approaches zero. © 1990.

引用

页码：1464 / 1466

页数：3

共 22 条

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