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False Twist Texturization of Polypropylene Multifilament Yarns Part IV: Structural Influences on Dye Uptake

Department of Textile Technology, Indian Institute of Technology, Delhi, New Delhi 110016, India

K. Sen

Department of Textile Technology, Indian Institute of Technology, Delhi, New Delhi 110016, India

A. Mukhopadhyay

Department of Textile Technology, Indian Institute of Technology, Delhi, New Delhi 110016, India

Polypropylene fiber and fibers spun from blends of polypropylene and small amounts of polyester and polystyrene incorporated through melt blending prior to spinning were investigated for dyeing performance in both untextured and textured forms. The dyeing performance improved with the addition of these polymers. While the reduction of crystallinity resulted in improved dyeing performance, the nature of the polymeric additive and other structural characteristics of the fibers also played an important role. A negative correlation exists between the number of crystals per unit volume and dye uptake.

Textile Research Journal, Vol. 56, No. 8, 511-515 (1986)
DOI: 10.1177/004051758605600809


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