Diffusion during the coagulation step of wet‐spinning
- 1 March 1968
- journal article
- research article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 12 (3) , 383-402
- https://doi.org/10.1002/app.1968.070120301
Abstract
The coagulation of viscous polymer solutions by diffusional interchange with a liquid bath is the key step to fiber formation by wet‐spinning. Model experiments were performed on gelled solutions of an acrylic polymer in dimethylacetamide, to determine the mass‐transfer rates of solvent and nonsolvent (water) during coagulation, the rate of movement of a boundary associated with coagulation, and the final equilibrium between the coagulated phase and the bath. Each is given as a function of bath composition and temperature. The data are analyzed by means of various diffusion models, one of them giving quite good agreement. The data and the models are used in conjunction with each other for the elucidation of the mechanism of the processes involved in coagulation.Keywords
This publication has 7 references indexed in Scilit:
- Reversible gelation of acrylonitrile–vinyl acetate copolymer solutions. II. Mechanical propertiesJournal of Applied Polymer Science, 1967
- Reversible gelation of acrylonitrile–vinyl acetate copolymer solutionsJournal of Applied Polymer Science, 1967
- Velocity, Temperature, and Concentration Distributions during Fiber SpinningIndustrial & Engineering Chemistry Fundamentals, 1964
- Characterization of Acrylic Fiber StructureTextile Research Journal, 1962
- Diffusion Processes in the Spinning Viscose Filament1Textile Research Journal, 1962
- The Spinning of Rayon as Related to its Structure and PropertiesTextile Research Journal, 1960
- Diffusion with discontinuous boundary (1)Journal of Colloid Science, 1947