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The construction of a phase diagram for a ternary system used for the wet spinning of acrylic fibers based on a linearized cloudpoint curve correlation
Author(s) -
Law S. J.,
Mukhopadhyay S. K.
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(19970912)65:11<2131::aid-app9>3.0.co;2-i
Subject(s) - phase diagram , acrylonitrile , ternary numeral system , materials science , ternary operation , spinning , acrylic acid , sodium thiocyanate , phase (matter) , polymer chemistry , thermodynamics , polymer , chemical engineering , chemistry , composite material , monomer , copolymer , organic chemistry , physics , computer science , engineering , programming language
A phase diagram for the commercially significant ternary system poly(acrylonitrile‐ co ‐methylacrylate‐ co ‐sulfonic acid), sodium thiocyanate, and water, used to wet‐spin textile acrylic fibers, was constructed from a linearized cloudpoint curve correlation. Experimental cloudpoints in the accessible low polymer content range were evaluated and used to extrapolate to higher polymer concentrations to produce a full‐phase diagram. Although the correlation only holds for systems undergoing liquid/liquid demixing, the fact that the relation holds for this system despite evidence for PAN crystallization is discussed. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 2131–2139, 1997