Study on dyeable polypropylene fiber and its properties

A disperse dyeable polypropylene fiber has been prepared by admixing polyst yrene to the polymer prior to extrusion. Polystyrene has been synthesized a t suitable molecule weight and narrow mol wt distribution. The dyeability, mechanical properties, shrinkage, degree of crystallinity, and orientation of pure polypropylene or the blend fibers with different amount of polystyr ene were investigated. In addition, the structure of the blend containing 4 and 6% polystyrene was also studied to explain the interesting dyeing beha vior of the blend fibers. (C) 2001 John Wiley & Sons, Inc.