JOURNAL OF TEXTILE RESEARCH ›› 2016, Vol. 37 ›› Issue (07): 88-92.

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Synthesis of peroxide activator for low-temperature bleaching of cotton fabric

  

  • Received:2015-08-17 Revised:2016-03-19 Online:2016-07-15 Published:2016-07-15

Abstract:

To overcome the drawbacks of conventional peroxide bleaching of cotton fabric such as high energy consumption and extensive fiber damage, N-[4-(triethylammoniomethyl)benzoyl]caprolactam chloride (TBCC) was synthesized for use as a peroxide bleach activator in this paper by one-pot method, which allowed cotton fabric to be bleached under near-neutral pH conditions at low temperatures. TBCC synthesized by the one-pot method was confirmed with proton nuclear magnetic resonance spectroscopy (1H NMR). Experimental results showed that, compared to the conventional synthesis method, the one-pot synthesis method could increase the final yield of TBCC by 35.2%. TBCC prepared by the one-pot synthesis method had the same bleaching effect as the the one synthesized by the conventional synthesis methods. Compared to the conventioal peroxide bleaching, the TBCC-activated peroxide system could provide cotton fabric withh equivalent degree of whiteness and slightly inferior water absorbency, but caused no apparent damage to cotton fibers. The one-pot synthesis of TBCC had advantages such as simplified operation, shortened process, reduced energy consumption, increased product yield, and as such lowered cost.

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