Roles of Novel Reactive Cationic Copolymers of 3-Chloro-2-hydroxypropylmethyldiallylammonium Chloride and Dimethyldiallylammonium Chloride in Fixing Anionic Dyes on Cotton Fabric

Yikai Yu,Yuejun Zhang

doi:10.1155/2013/365103

Yikai Yu, Yuejun Zhang

Open Access

https://doi.org/10.1155/2013/365103

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Abstract

The roles of novel reactive cationic copolymers (P(CMDA-DMDAAC)s) of 3-chloro-2-hydroxypropylmethyldiallylammonium chloride (CMDA) and dimethyldiallylammonium chloride (DMDAAC) in fixing anionic dyes on cotton fabric were studied by modern instrumental analysis technologies such as FT-IR spectra and SEM analysis, to achieve the new theoretical guides for the wide applications of those dye fixatives. The FT-IR spectra of the obtained insoluble-water color lakes verified that they could be formed from the electrostatic interactions of the P(CMDA-DMDAAC)s with anionic dyes, which were further confirmed by the FT-IR analysis of the anionic dyes on dyeing cotton sample fixed by P(CMDA-DMDAAC)s. The FT-IR spectra of cotton samples fixed by P(CMDA-DMDAAC)s showed the absorptions of P(CMDA-DMDAAC)s and the signs similar to the formation of new ether linkage on cotton fabric even after being repeatedly washed, which were further confirmed by the SEM analysis of the fixed dyeing cotton samples. Thus, the reactive units (CMDA) of the obtained P(CMDA-DMDAAC)s could be expected to bring about the covalent bonds with the hydroxyl groups of cotton (cellulose) to form an ether linkage when fixing, resulting in the stronger interactions of P(CMDA-DMDAAC)s with cotton fabric, as well as their electrostatic forces with anionic dyes to produce the insoluble-water color lakes, for the development of fastness of anionic dyes on cotton fabric.

Highlights

Cotton fabric is the most widely welcomed textile in the world, which is mainly made of cellulose [1]
Poly (PDMDAAC), which is the polymer derived from radical homopolymerization of dimethyldiallylammonium chloride (DMDAAC), has been used as the optimum dye xatives with a view to enhance the uptake of anionic dyes on cotton fabric, and the mechanism of interactions involved can be theoretically interpreted by the participation of electrostatic forces between the dyes and the basic cationic groups in the polymer to reduce the dyes’ water-soluble abilities through the formation of color lakes [3, 4]
A er forming color lakes, the dye’s absorptions at 1549 cm−1 (Peak 2), 1562 cm−1 (Peak 4), 1407 cm−1, and 1390 cm−1 (Peak 6) were, respectively, shi ed to 1541 cm−1 (Peak 3), 1568 cm−1 (Peak 5), 1417 cm−1, and 1394 cm−1 (Peak 7); especially the absorption of dye’s sulfonate anion at 1103 cm−1 (Peak 8) was shi ed to 1202 cm−1 (Peak 9); those dye’s structure changes could be attributed to the electrostatic interactions between the P(DHACDMDAAC) and the anionic dye (Reactive Scarlet 3BS). Us, it could be concluded from the above-mentioned results that the basic cationic groups of the obtained P(CMDA-DMDAAC)s would form electrostatic forces with anionic dyes to produce the insoluble-water color lakes

Summary

Introduction

Cotton fabric is the most widely welcomed textile in the world, which is mainly made of cellulose [1]. Poly (dimethyldiallylammonium chloride) (PDMDAAC), which is the polymer derived from radical homopolymerization of dimethyldiallylammonium chloride (DMDAAC), has been used as the optimum dye xatives with a view to enhance the uptake of anionic dyes on cotton fabric, and the mechanism of interactions involved can be theoretically interpreted by the participation of electrostatic forces between the dyes and the basic cationic groups in the polymer to reduce the dyes’ water-soluble abilities through the formation of color lakes [3, 4] It appears that no con rmation of the interpretation has been carried out by modern instrumental analysis technologies. The information about roles of novel P(CMDA-DMDAAC)s in xing anionic dyes on cotton fabric was very limited and especially it has not been veri ed by modern instrumental analysis in open literature yet. us, in this paper, a series of experiments were designed to con rm the roles of novel P(CMDA-DMDAAC)s in xing anionic dyes on cotton fabric such as the xing interactions of P(CMDA-DMDAAC)s with anionic dyes and cotton fabric, by modern instrumental analysis technologies [FT-IR spectra and Scanning Electron Microscopy (SEM)], to achieve the new theoretical guides for the wide applications of those PDMDAAC-based dye xatives

Experimental

Results and Discussion

Conclusions