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Investigation of wet‐spun acrylic fiber morphology by membrane technology techniques
Author(s) -
Law S. J.,
Mukhopadhyay S. K.
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(19961003)62:1<33::aid-app6>3.0.co;2-t
Subject(s) - materials science , membrane , composite material , fiber , synthetic fiber , isotropy , permeability (electromagnetism) , morphology (biology) , optics , chemistry , biochemistry , physics , biology , genetics
The as‐formed structure of wet‐spun acrylic fiber from the sodium thiocyanate system has been probed, exploiting a number of techniques developed in the membrane industry. The use of flat membrane geometry in the study of wet‐spun fibers has been proven to be valid. The calculation of average pore dimensions in the surface of acrylic membrances by a hydraulic permeability method has agreed well with microscopic examination. The skin layer present on both fibers and membrances has been shown to be structurally isotropic for the extruded fiber by a novel polarized infrared microspectroscopy technique. The consequences of this in downstream processing are discussed. © 1996 John Wiley & Sons, Inc.