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Sulfonation of polyetheretherketone and its effects on permeation behavior to nitrogen and water vapor
Author(s) -
Jia Lianda,
Xu Xiaofeng,
Zhang Huajie,
Xu Jiping
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(19960523)60:8<1231::aid-app16>3.0.co;2-4
Subject(s) - glass transition , phenolphthalein , sulfuric acid , thermal stability , solubility , water vapor , amorphous solid , chemical engineering , materials science , polymer chemistry , nitrogen , permeation , atmospheric temperature range , chemistry , organic chemistry , composite material , polymer , membrane , thermodynamics , biochemistry , engineering , physics
The novel polytheretherketone (PEK‐C) prepared from phenolphthalein in our institute is an amorphous, rigid, tough material with good mechanical properties over a wide temperature range. To improve its water vapor permeability for the application of gas drying, PEK‐C was sulfonated with concentrated sulfuric acid and transferred in sodium, cupric, and ferric salt forms. Sulfonation degree can be regulated by controlling the temperature and reaction time. Characterization of sulfonated PEK‐C in sodium form was made by infrared spectroscopy. Some properties of the sulfonated PEK‐C, such as solubility, glass transition temperature, thermal stability, mechanical properties, and transport properties to nitrogen and water vapor, are also discussed. © 1996 John Wiley & Sons, Inc.