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Cast polyurethane elastomers obtained with N , N ′‐ethyleneurea and 1,4‐butanediol as chain extenders
Author(s) -
Debowski M.,
Balas A.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(20000131)75:5<728::aid-app16>3.0.co;2-#
Subject(s) - 1,4 butanediol , elastomer , butanediol , polyurethane , chain (unit) , materials science , polymer chemistry , polymer science , composite material , chemistry , organic chemistry , physics , astronomy , fermentation , catalysis
Tensile properties and dynamic mechanical thermal properties for polyurethane elastomers extended with N , N ′‐ethyleneurea (EU) and 1,4‐butanediol (1,4‐BD) were investigated. Also gel permeation chromatography and extraction experiments for selected elastomers were performed. EU residues were introduced into polyurethane during prepolymer synthesis at 140°C. Such prepolymers with built‐in EU residues were extended with 1,4‐BD for different [NCO]/[OH] molar ratios. The use of EU chain extender produces in general polymers with inferior mechanical properties compared to the typical 1,4‐BD based polyurethanes, although some of the EU‐based polymers show improved strain‐stress parameters. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 728–733, 2000