The influence of FWA chemical constitution to the whiteness and UV protection of cotton and cotton/polyester blend

Advanced Technologies Pub Date : 2021-01-01 DOI:10.5937/savteh2102066b

L. Botteri, Tihana Dekanić, A. Tarbuk, D. Đorđević

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Abstract

It is well known that the optimal concentration of fluorescent whitening agent (FWA) in the bath results in high whiteness of single component textiles. At the same time, due to fluorescence of FWA, the higher UV protection is achieved as well. However, for the textile blends it is not so easy to achieve. Depending on the fabric chemical composition, different FWAs must be applied. Therefore, the influence of FWA chemical constitution to the whiteness and UV protection of cotton and cotton/polyester blend were researched in this paper. For that purpose, cotton and cotton/polyester blended (50%/50%) fabrics was treated with four different FWAs by Huntsman, Uvitex® brand: BHT, RSB, NFW and EBF. Spectral remission before and after FWA treatment was measured on a remission spectrophotometer Spectraflash SF 300, Datacolor. Whiteness degree was calculated according to ISO 105-J02:1997, and the Tint Deviations and its coloristic meanings were determined according to Griesser. The UV protection of cotton and cotton/polyester fabrics treated with FWA was determined according to AS/NZS 4399:2017 using transmission spectrophotometer Cary 50/Solascreen, Varian. Based on the results obtained,the stilbene disulphonic acid triazine derivative (Uvitex® RSB) can be recommended for use on a cotton/polyester blend.

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FWA化学成分对棉和棉/涤纶混纺织物白度和防紫外线性能的影响

众所周知，荧光增白剂在浴液中的最佳浓度可以提高单组分纺织品的白度。同时，由于FWA的荧光性，也达到了更高的紫外线防护。然而，对于纺织混纺织物来说，这就不那么容易实现了。根据织物的化学成分，必须使用不同的FWAs。因此，本文研究了FWA化学成分对棉和棉/涤纶混纺织物白度和防紫外线性能的影响。为此，用亨斯迈、Uvitex®品牌的四种不同的FWAs处理棉和棉/聚酯混纺(50%/50%)织物:BHT、RSB、NFW和EBF。用Datacolor公司的光谱缓解分光光度计Spectraflash SF 300测量FWA治疗前后的光谱缓解。根据ISO 105-J02:1997计算白度，根据Griesser确定色度偏差及其色彩含义。根据AS/NZS 4399:2017，使用透射分光光度计Cary 50/Solascreen, Varian测定经FWA处理的棉和棉/涤纶织物的紫外线防护性能。根据获得的结果，二苯乙烯二磺酸三嗪衍生物(Uvitex®RSB)可以推荐用于棉/聚酯混纺。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Advanced Technologies

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