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Transport of blowing agents in polyurethane
Author(s) -
Hong Seong Uk,
Albouy Arnaud,
Duda J. Larry
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 - 10.1002/1097-4628(20010124)79:4<696::aid-app140>3.0.co;2-a
Subject(s) - blowing agent , polyurethane , solubility , thermal diffusivity , materials science , volume (thermodynamics) , chemical engineering , composite material , thermodynamics , polymer chemistry , chemistry , organic chemistry , physics , engineering
Desorption experiments are conducted for several blowing agents in polyurethane at room temperature and with various blowing agent pressures. The diffusivity and solubility data for blowing agents are compared with the corresponding values for chlorofluorocarbon 11 (CFC 11). In addition, the solubility and diffusivity for these blowing agents in polyurethane are explained in terms of the solubility parameter and van der Waals volume, respectively. The calculated permeabilities based on the measured diffusivities and solubilities indicate that among the nine blowing agents investigated in this study, eight blowing agents can be possible candidates for substitutes of CFC 11 in polyurethane foams. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 696–702, 2001