Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712.
Effect of spin orientation on drawing of wet-spun fibers
Article first published online: 9 MAR 2003
Copyright © 1977 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 21, Issue 6, pages 1699–1713, June 1977
How to Cite
Paul, D. R. and McPeters, A. L. (1977), Effect of spin orientation on drawing of wet-spun fibers. J. Appl. Polym. Sci., 21: 1699–1713. doi: 10.1002/app.1977.070210626
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Revised: 27 MAY 1976
- Manuscript Received: 5 JAN 1976
A previous study has shown that the draw stress of wet-spun acrylic fibers is affected by the orientation acquired in the spin bath, and a tentative mathematical treatment was proposed which employs an analogy with two-stage drawing. In this picture, the spin bath orientation is characterized by an effective draw ratio ℛs, the orientation draw is characterized by ℛ, and the total draw ratio ℛt equals ℛℛs. This concept is developed more extensively in this paper. New data are presented on both acrylic and modacrylic fibers which support the validity of this treatment and also demonstrate how spin orientation is correlated with the take-up speed/free velocity ratio. Absolute values for the effective spin orientation are calculated. Results from round spinneret holes and one-slot hole are discussed with observations on shape retention.