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Transport properties of dichloromethane in glassy polymers. VI. Poly(ethylene terephthalate)
Author(s) -
Bove L.,
D'aniello C.,
Gorrasi G.,
Guadagno L.,
Vittoria V.
Publication year - 1996
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(19961114)62:7<1035::aid-app9>3.0.co;2-l
Subject(s) - sorption , dichloromethane , poly ethylene , diffusion , ethylene , solvent , materials science , amorphous solid , crystallization , chemical engineering , polymer chemistry , polymer , polyethylene terephthalate , chemistry , thermodynamics , organic chemistry , composite material , adsorption , physics , engineering , catalysis
Sorption and diffusion of dichloromethane vapor in amorphous poly(ethylene terephthalate) (PET) were investigated, with the aim of studying how aging phenomena, at different temperatures, influence the transport properties. It has been found that aging produces the appearance of non‐Fickian behavior in the sorption curves as well as the reduction of the diffusion coefficients. Furthermore, aging at 60°C reduces the sorption of vapor at low activity, and this led to the hypothesis of the presence of ordered domains in the aged samples. In this case, the process of solvent‐induced crystallization is favored, and it appears at lower activity. © 1996 John Wiley & Sons, Inc.