engleski

The UV protection of cationized cotton/polyester blend

Clothing provides some UV protection which depends on the physical and chemical properties of the fiber and fabric. Cationization, as a modification with ammonium compounds in alkaline medium, results in the change of the surface charge, as well as in higher fabric thickness and lower porosity. Since these parameters contribute to better UV protection, in this research, the cotton/polyester 50/50 blended fabrics were cationized with Rewin OS by exhaustion method. An anionic optical brightener Uvitex RSB was applied in concentrations of 1, 2, 5 and 10% owf by exhaustion. The whiteness and yellowing were determined on remission spectrophotometer Spectraflash SF 300 (Datacolor) according to ISO 105-J02:1997 and DIN 6167:1980 respectively. The UV protection was determined according to AS/NZS 4399:2017 on the transmission spectrophotometer, Cary 50 Solascreen (Varian). The porosity and thickness were determined. Porosity was calculated based on the fabric cover factor after analysis of microscopic images using DinoLite microscope and the fabric thickness was performed on a thickness gauge. All parameters were observed and evaluated in correlation in relation to fabric UV protection.

Cotton/polyester blend ; Cationization ; Optical brightener ; Porosity ; Thickness ; UV protection

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