Stress relaxation of thermoplastic polyurethanes monitored by FTIR spectroscopy

被引：15
作者：
Monteiro, EEC
Fonseca, JLC
机构：
[1] Univ Fed Rio Grande Norte, Dept Quim, BR-59072970 Natal, RN, Brazil
[2] Univ Fed Rio de Janeiro, Inst Macromol, BR-21945 Rio De Janeiro, Brazil
来源：
POLYMER TESTING | 1999年 / 18卷 / 04期
关键词：
D O I：
10.1016/S0142-9418(98)00029-4
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Stress relaxation of two poly(ether-urethane-urea)s was monitored using FTIR spectroscopy. Structurally, these block copolymers were the result of the reaction of 1 mol of a polyol [poly(propylene glycol) or poly(tetramethylene glycol)], 2 mol of 4-4'-dihexylmethane diisocyanate, and 1 mol of propylenediamine. FTIR spectra during relaxation showed that the copolymer based on poly(tetramethylene glycol) is more phase-segregated then the one based on poly(propylene glycol). (C) 1999 Elsevier Science Ltd. All rights reserved.
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收藏
页码：281 / 286
页数：6
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