Elucidation of the hard segment transition in a diacetylene-containing copolyurethane using modulated differential scanning calorimetry

被引：5

作者：

Hu, X

Breach, CD

Young, RJ

机构：

[1] NANYANG TECHNOL UNIV,SCH APPL SCI,SINGAPORE 639798,SINGAPORE

[2] UMIST,MANCHESTER MAT SCI CTR,MANCHESTER M60 1QD,LANCS,ENGLAND

来源：

POLYMER | 1997年 / 38卷 / 04期

关键词：

segmented copolyurethanes; diacetylene; hard segments; order-disorder transition;

D O I：

10.1016/S0032-3861(96)00718-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A segmented copolyurethane containing diacetylene units in the hard segments has been analysed using modulated differential scanning calorimetry (m.d.s.c.). An endothermic peak is observed in the m.d.s.c. reversible heat flow curve at about 160 degrees C which is due to an order-disorder transition of the paracrystalline diacetylene-containing hard segments. Such a transition is confirmed for the first time, since it was undetectable in previous conventional d.s.c. analysis. (C) 1997 Elsevier Science Ltd.

引用

页码：981 / 983

页数：3