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Influence of diethanolamine (DEOA) on structure–property behavior of molded flexible polyurethane foams
Author(s) -
Kaushiva Bryan D.,
Wilkes Garth L.
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(20000705)77:1<202::aid-app27>3.0.co;2-o
Subject(s) - diethanolamine , polyurethane , materials science , fourier transform infrared spectroscopy , annealing (glass) , composite material , polymer , hydrogen bond , viscoelasticity , softening , dynamic mechanical analysis , chemical engineering , polymer chemistry , molecule , chemistry , organic chemistry , engineering
Abstract In this study, the viscoelastic and morphological properties of molded foams were investigated to determine the influence of varying the concentration of diethanolamine (DEOA), a commercially utilized crosslinking agent. FTIR and WAXS analyses showed that DEOA had a disrupting effect on the bidentate hydrogen bonding within the hard domains of the polymer. DMS revealed that DEOA softens the foam above the T g of the soft segment but only causes minor changes in the degree of microphase separation. Annealing treatments were shown to remove the DEOA influence on the microphase separation as well as some of the softening effect. FTIR was used to show that bidentate hydrogen bonding is enhanced through the annealing of DEOA foams. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 202–216, 2000