Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

A Study on Fiber Formation and Physical Properties of Acrylic Fibers Based on Critical Concentration Coagulation Bath (II)

인계농도 응고욕을 이용한 아크릴 섬유의 형성고 물성에 관한 연구(II)

  • Published : 1992.06.01

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Abstract

As a part of the project for obtaining acrylic fibers with optimum structure and proper-ties based on the critical coagulation bath composition (CCBC) for the polyacrylonitrile/HNO₃/H₂0 spinning system. The critical points at different spinning conditions have been investigated rom the variation of the maximum take-up speed with the coagulation bath composition(CBC). Then, the apparent diffusion coefficients of both solvent and nonsolvent at two different CBC's below and above the critical composition at a given spinning condition have been estimated from coagulation experiments according to modified Terada's treatment on quasi-binary diffusion in order to study the effect on the changes in structure and properties of the resulting fibers. In addition, the comparisons of the physical properties (mechanical properties, volume porosity, dye absorption, and morphology) between the fibers obtained at two kinds of bath compositions below and above the CCBC have been made in view of the variations in diffusion coefficients of both solvent and nonsolvent.

Keywords

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