FT-IR study of poly(ether)urethanes

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Authors
  1. Hiltz, J.A.
  2. Szabo, J.P.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The infrared (IR) spectra of sixteen 4,4-methylenebis(phenyl isocyanate) (MDI) based and four 1,6-diisocyanatohexane (HDI) based poly(ether)urethane (AB)n block copolymers are presented. Differences in the IR spectra of these polymers are related to differences in the diols and polyether glycols and the ratios of reactants used to synthesize them. IR spectroscopy can distinguish between the MDI and HDI poly(ether)urethanes and identify the diols and polyether glycols used to prepare the polymers. The intensity of the amide I bands (non-hydrogen bonded and hydrogen) are found to depend on the hard segment weight fraction of the polymers and are indicative of the degree of hydrogen bonding in the polymers. The relative intensity of the C-O stretches in the hard and soft segments of the polymers were found to increase with hard segment weight fraction.

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Keywords
Poly(ether)urethanes;Thermal properties;Infrared spectrometry;Fourier Transform Infrared Spectroscopy;Fourier transform infrared (FTIR) spectrometry;Hydrogen bonding;4,4'-methylenebis(phenyl isocyanate)(MDI);1,6-diisocyanatohexane (HDI);Ploy(ether) glycols;2,2-dimethyl-1,3-propanediol;Diethylene glycol;1,4-butanediol
Report Number
DREA-TM-2001-073 — Technical Memorandum
Date of publication
01 Jun 2001
Number of Pages
60
DSTKIM No
CA011832
CANDIS No
516386
Format(s):
Hardcopy;Document Image stored on Optical Disk

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