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

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

Content Provider	Springer Nature Link
Author	Shome, Debashis Samanta, Ashis Kumar Konar, Adwaita Kar, Tapas Ranjan Mukhopadhyay, Asis
Copyright Year	2015
Abstract	Bleached cotton muslin fabric with or without pre-oxidized with NaIO$_{4}$ (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 –NH$_{3}$ $^{+}$ 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.
Starting Page	31
Ending Page	44
Page Count	14
File Format	PDF
ISSN	22502483
Journal	Journal of The Institution of Engineers (India): Series E
Volume Number	96
Issue Number	1
e-ISSN	22502491
Language	English
Publisher	Springer India
Publisher Date	2015-03-12
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Amino acid Colour fastness Reactive dye Dyeability Cow-dung bleach Glycine Cotton muslin
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Chemical Engineering Materials Science

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