Structure and viscoelastic properties of segmented polyurethane blends

被引：0
|
作者：
Takigawa, T
Oodate, M
Urayama, K
Masuda, T
机构：
[1] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN
[2] KYOTO UNIV,DIV MAT CHEM,SAKYO KU,KYOTO 60601,JAPAN
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1996年 / 59卷 / 10期
关键词：
D O I：
10.1002/(SICI)1097-4628(19960307)59:10<1563::AID-APP9>3.0.CO;2-K
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Structure and viscoelastic properties of segmented polyurethanurea (SPU) blends were investigated. The glass transition temperature (T-g) of poly(tetramethylene glycohol) (PTMG) in a soft-segment block of the component SPU increased with decreasing molecular weight of PTMG. The blend samples showed two T(g)s of PTMG in the temperature dispersions of the loss modulus (E '') and loss tangent (tan delta). The value of E' in the leathery region for the blend specimens was strongly affected by the morphology. The blends were considered to have a morphology where PTMG differing in molecular weight was localized. (C) 1996 John Wiley & Sons, Inc.
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收藏
页码：1563 / 1568
页数：6
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