Studies on Dyeing Process Variables for Salt Free Reactive Dyeing of Glycine Modified Cationized Cotton Muslin Fabric

被引：9

作者：

Samanta A.K. ^{[1
]}

Kar T.R. ^{[2
]}

Mukhopadhyay A. ^{[1
]}

Shome D. ^{[1
]}

Konar A. ^{[1
]}

机构：

[1] Department of Jute and Fibre Technology, Institute of Jute Technology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal

[2] Mahatma Gandhi Institute for Rural Industrialization, Maganwadi, Wardha, 442001, Maharashtra

来源：

Journal of The Institution of Engineers (India): Series E | 2015年 / 96卷 / 01期

关键词：

Amino acid; Colour fastness; Cotton muslin; Cow-dung bleach; Dyeability; Glycine; Reactive dye;

D O I：

10.1007/s40034-015-0062-4

中图分类号：

学科分类号：

摘要：

Bleached cotton muslin fabric with or without pre-oxidized with NaIO4 (oxy-cotton) was chemically modified with glycine (amino acid) by pad dry calendar process to investigate the changes in textile properties and its dyeability with reactive dye. This glycine modified cotton incorporates new functional groups producing –NH3 + or –C=NH+ -ion (cationic groups) in acid bath to obtain cationized cotton making it amenable to a newer route of salt free reactive dyeing in acid bath. In the present work the process variables of reactive dyeing in the salt free acid bath for dyeing of amine (glycine) modified cationized cotton were studied and optimized. The present study also includes thorough investigation of changes in important textile related properties and dyeability with reactive dye after such chemical modifications. Between oxidized and unoxidized cotton muslin fabric, unoxidized cotton fabric shows better reactive dye uptake in both conventional alkaline bath dyeing and nonconventional salt free acid bath dyeing particularly for high exhaustion class of reactive dye with acceptable level of colour fastness and overall balance of other textile related properties. Moreover, application of dye fixing agent further improves surface colour depth (K/S) of the glycine treated cotton fabric for HE brand of reactive dyes. Corresponding reaction mechanisms for such modifications were supported by FTIR spectroscopy. Finally unoxidized cotton and pre-oxidized cotton further treated with glycine (amino acid) provide a new route of acid bath salt free reactive dyeing showing much higher dye uptake and higher degree of surface cover with amino acid residue anchored to modified cotton. © 2015, The Institution of Engineers (India).

引用

页码：31 / 44

页数：13

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