Effects of undoped and manganese-doped zinc oxide nanoparticles on the colour fading of dyed polyester fabrics
Effects of undoped and manganese-doped zinc oxide nanoparticles on the colour fading of dyed polyester fabrics
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DOI：
10.1016/j.cej.2008.11.032
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发表时间：
2009-04
影响因子：
15.1
通讯作者：
Lu Sun;J. Rippon;P. Cookson;Olga Koulaeva;Xungai Wang
中科院分区：
文献类型：
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作者：
Lu Sun;J. Rippon;P. Cookson;Olga Koulaeva;Xungai Wang
本文介绍了应用含有纳米氧化锌（ZnO）的丙烯酸聚合物涂层对含蒽醌和苯并吡喃发色团的分散染料染色的聚酯织物在人工日光下褪色速率的影响。讨论了影响涂层透明性和紫外吸收率的因素。用ZnO纳米颗粒去除太阳光的UV组分显著降低了染料的褪色速率，前提是聚合物/ZnO膜不与织物直接接触。然而，当处理直接施加到织物上时，对所研究的两种染料的褪色保护是不同的。而苯并吡喃染料的褪色率，相对较低的耐光性，降低了聚合物-ZnO膜，处理增加了染料的褪色率较高的耐光性，基于蒽醌。这种效应归因于ZnO暴露于UV时产生的活性氧（ROS）。研究了锰掺杂对ZnO光活性的影响。对于苯并吡喃染料，UV保护大大增加，而蒽醌基染料的改善要小得多。
This paper describes the effects of applying coatings of an acrylic polymer containing nanoparticles of zinc oxide (ZnO) on the fading rate in artificial sunlight of polyester fabrics dyed with disperse dyes containing anthraquinone and benzopyran chromophores. Factors affecting the transparency and UV absorbance of the coatings are discussed. Removing the UV component of sunlight with ZnO nanoparticles markedly decreased the fading rate of the dyes, provided the polymer/ZnO film was not in direct contact with the fabric. When the treatment was applied directly to the fabrics, however, the protection against colour fading was different for the two dyes studied. Whereas the rate of colour fading of a benzopyran dye, of relatively low lightfastness, was decreased by the polymer-ZnO film, the treatment increased the fading rate of the dye of higher lightfastness, based on anthraquinone. This effect has been attributed to the generation of reactive oxygen species (ROS) when ZnO is exposed to UV. The effect of decreasing the photoactivity of ZnO by doping with manganese has been examined. For the benzopyran dye, the UV protection was greatly increased, whereas a much smaller improvement was found for the anthraquinone-based dye.