Fluid dynamics and mass transfer in the formation of fibers

T. M. Getmanyuk, Alexander Yarin

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Abstract

In the wet method of fiber formation, a polymer solution is fed through a spinnerette. The polymer emerges from the spinnerette in the form of filaments, which then enter a bath filled with a low-molecular-weight precipitant and a solvent. The filaments harden as a result of a change in the composition of the polymer system during counter diffusion of the precipitant and solvent. Here, the precipitant enters the filament material from the bath, while the solvent diffuses into the bath. When the concentration of precipitant inside the filaments reaches a certain value, the polymer system begins to coagulate. In this study, the goal was to construct a physical theory of this fiber formation process which did not depend on emperical viscosity values. Results of the proposed model satisfactorily reproduce the characteristics of the wet formation process.

Original languageEnglish
Pages (from-to)737-744
Number of pages8
JournalJournal of Engineering Physics (English Translation of Inzhenerno-Fizicheskii Zhurnal)
Volume55
Issue number1
Publication statusPublished - 1989 Jan 1
Externally publishedYes

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ASJC Scopus subject areas

  • Engineering(all)

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