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  • WJPPS MARCH ISSUE PUBLISHED
  • MARCH 2019 Issue has been successfully launched on 1 March 2019

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Abstract

IN SITU GENERATION OF HYDROGEN PEROXIDE BY GLUCOSE OXIDASE IN DESIZED LIQUOR FOR COTTON BLEACHING

Kalyani Ganesan, Rajesh Embiranhalli Mani*, Janani niveda Easwaramoorthy and Koushika Shangameswaran

ABSTRACT

Pretreatment of cotton are essential to make it suitable for finishing process where soul of bringing whiteness to the cotton fabrics after removal of sizing agents with lesser damage belongs to bleaching. In situ generation of hydrogen peroxide from glucose saves enormous amount of water and its eco-friendly. Glucose was estimated as 3800 mg/l in desized liquor and the maximal hydrogen peroxide generation was attained at pH 5 under 55ÂșC using 1% glucose oxidase for 75 mins at 100 rpm. Bleaching was performed in desized liquor under optimized parameters. Various physical and functional properties were determined to ensure the quality of fabrics. Weight loss and wettability of enzymatically bleached fabrics were found to be 4.15% and l sec respectively. Strength of enzymatically bleached fabrics showed 43 and 36 lbs strength in warp and weft direction comparatively higher than conventionally bleached. Whiteness index of bleached fabrics was found to be 79.4 which slightly lower than conventional bleaching. Henceforth, the result evidenced that in situ generated hydrogen peroxide was efficiently performed an effective bleaching of cotton fabrics thus regarded as greener alternative.

Keywords: Bleaching, in situ generation, hydrogen peroxide, desized liquor, glucose.


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