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Environmental stress deformation of poly(ether ether ketone)
Author(s) -
Srivastava Ambrish P.,
Depke Nick,
Wolf Clarence J.
Publication year - 1997
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(19971024)66:4<725::aid-app12>3.0.co;2-q
Subject(s) - peek , sorption , aqueous solution , materials science , solubility , wetting , ether , surface energy , polymer chemistry , ultimate tensile strength , chemical engineering , composite material , chemistry , organic chemistry , polymer , adsorption , engineering
The sorption of water in poly(ether ether ketone) (PEEK) from aqueous solutions containing a small (5 × 10 −5 mol fraction) of three different surfactants was investigated as a function of external tensile stress. One of the surfactants, a polyoxyethylene alcohol, exhibited a strong stress effect, producing an increase in water solubility of nearly an order of magnitude for stress levels > 40 MPa in amorphous PEEK. The solubility and diffusion coefficient for the sorption of water into PEEK were also investigated. The critical stress (strain) for water sorption, the rate of wetting, and surface deformation morphology were determined. In these aqueous solutions, the primary factor affecting stress‐enhanced sorption is a reduction in surface energy and associated surface mobility. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 725–731, 1997