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
✍ Scribed by S. J. Law; S. K. Mukhopadhyay
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 290 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
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 fullphase 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.