Incorporating small amounts of polyester and polystyrene into polypropylene by melt blending prior to spinning reduces crystallinity considerably. An amount as low as 5% polystyrene reduces crystallinity from 70% for the parent fiber to 34% for the blend. A reduction in feeder yam crystallinity results in a greatly improved performance in texturizability of the fiber.
Get full access to this article
View all access options for this article.
References
1.
Molkova, G.N. , Filbert, D.V., and Pakshver , A.B., Increasing Shrinkage Capacity of Polypropylene Fibre by Modification, Fibre Chem.7, 100-101 (1975).
2.
Sengupta, A.K. , Sen, K., and Mukhopadhyay , A., False Twist Texturization of Polypropylene Multifilament Yam, Part I. Time-Temperature Effect, Textile Res. J.56, 281-286 (1986).
3.
Sengupta, A.K. , Sen, K., and Mukhopadhyay , A., False Twist Texturization of Polypropylene Multifilament Yam, Part II: Reducing Feeder Yarn Crystallinity Through Tension Annealing, Textile Res. J.56, 389-392 (1986).
