Synthesis and Dyeing Behavior of two Remazol Reactive Dyes with Sulfo Vinyl Sulfone Functionality on Cotton Fabric and their Degradation Study

Research Article

Synthesis and Dyeing Behavior of two Remazol Reactive Dyes with Sulfo Vinyl Sulfone Functionality on Cotton Fabric and their Degradation Study

Jigar R. Patel, Mitesh H. Patel, Pranav S. Shrivastav, Mallika Sanyal

Corresponding Author : Mallika Sanyal,

Department of Chemistry, St. Xavier Academic College, Navrangpura, Ahmedabad- 380009, India,.

Email ID : mallikashrivastav@yahoo.co.in

Received : 2014-05-12 Accepted : 2014-05-30 Published : 2014-05-30

Abstract : The article presents synthesis of two new remazol reactive dyes (Orange D and Black BE) having sulfo vinyl sulfone functionality for dyeing cotton fabric. The reaction yield was greater than 98 % for both the dyes and their purity (≥ 99 %) was determined by HPLC on BDS Hypersil C18 (250 × 4.6 mm, 5 µ) analytical column. As the dyes contain more reactive sulfonic acid groups, they display superior performance on dyeing cotton fabric compared to their reference dyes (Reactive Orange 2R and Reactive Black B) used commercially. Due to enhanced water solubility, exhaustion method was used for dyeing cotton fabric. The degree of primary and secondary exhaustion from the dyeing bath was 62.8 % and 84.3 % for Orange D and 64.1 % and 84.4 % for Black BE respectively. Similarly, the fixation ratio and fixation yields were 85.3 % and 71.2 % for Orange D and 88.1 % and 74.3 % for Black BE respectively. The photo catalytic degradation of both the reactive dyes was studied in aqueous solution using TiO2-P25 as a photo catalyst under solar and UV irradiation. Further, different operational parameters like pH of initial solution, contact time and initial dye concentration were optimized for dye degradation

Keywords : Remazol Reactive dyes; Cotton fabric; Exhaustion method; Photo catalytic degradation

Citation : Mallika Sanyal, et al (2014) Synthesis and Dyeing Behavior of two Remazol Reactive Dyes with Sulfo Vinyl Sulfone Functionality on Cotton Fabric and their Degradation Study. j. of Physical and Chemical Sciences.V1I3.01. DOI : 10.5281/zenodo.999790

Copyright : © 2014 Mallika Sanyal. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Reviewer Comments : In this article, the interest is focused on the synthesis of two new remazol reactive dyes Orange D and Black BE and their dye properties. The purity of the two synthetic dyes was determined by HPLC chromatography. One of the added values of this work is manifested in the improvement of the performance of synthesized dyes in the dyeing of cotton fabric compared to commercial dyes. This was possible due to more reactive groups and increased water solubility. Other positive points of these dyes have been made. It's about higher primary and secondary dye exhaustion, greater fixation yields and superior color strength.

Professor of Chemistry at Cadi Ayyad University
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