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Title: Effect of pretreatment with solvents and solvent mixtures on the structure/properties and dye uniformity of textured polyester yarn
Authors: Chattopadhyay, D P
Singh, R K
Patra, T N
Samanta, A K
Keywords: Dye uniformity;Dye uptake;Polyester multifilament yarn;Solvent swelling;Structure property relationship;Textured yarn
Issue Date: Dec-1998
Publisher: NISCAIR-CSIR, India
Abstract: Textured polyester multifilament yarn was subjected to swelling in single and mixed solvents (with varying ratio) at room temperature for different durations. The changes in the structure and properties of the yarn were investigated by measuring birefringence, crystallinity, critical dissolution time, shrinkage on treatment, % change in bulk, residual shrinkage, crimp rigidity, dye uptake and dye uniformity. Among the four single solvents used, dimethyl formamide (DMF) and methylene chloride showed better balance of the above properties and dye uniformity. Use of a mixture of tetrachloroethane and DMF in the ratio of 1:3 gave dye uptake at par or slightly better than that given by the corresponding single solvent but showed more dye uniformity.
Page(s): 267-276
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.23(4) [December 1998]

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