纺织学报 ›› 2011, Vol. 32 ›› Issue (10): 88-0.

• 染整与化学品 • 上一篇    下一篇

TiO2晶型对整理棉织物性能的影响

戚栋明,,徐杰,张睿   

  1. 浙江理工大学
  • 收稿日期:2010-10-26 修回日期:2011-02-24 出版日期:2011-10-15 发布日期:2011-10-24
  • 通讯作者: 戚栋明 E-mail:dongmingqi@zstu.edu.cn
  • 基金资助:

    国家级;省级

Effect of the crystal of nano-TiO2 on the performances of finished cotton fabric

  • Received:2010-10-26 Revised:2011-02-24 Online:2011-10-15 Published:2011-10-24
  • Contact: Dong-Ming QI E-mail:dongmingqi@zstu.edu.cn

摘要: 将金红石型和锐钛矿型两种不同TiO2的水分散液及其相应的聚丙烯酸丁酯复合胶乳应用于棉织物的功能整理,通过考察紫外线照射下整理织物的老化、杀菌和紫外屏蔽性能,来研究整理织物表面不同晶型TiO2对紫外线的响应机制及其对整理织物性能的影响。发现两种晶型TiO2除均具有较强的紫外屏蔽作用之外,金红石型TiO2表现出强的抗老化作用和弱的杀菌作用,而锐钛矿型TiO2在提供强杀菌作用的同时反而会显著加速整理棉织物的老化脆损。认为金红石型TiO2主要表现为吸收和漫反射作用;而锐钛矿型TiO2具有强烈的光催化效应,这种效应产生的大量强氧化性自由基会在杀菌的同时加速纤维分子链的断裂。因此,在进行功能整理时应根据需要选取合适晶型的TiO2,并采取适当措施以抑制其中的不利效应。

Abstract: Rutile and anatase TiO2 and its poly(butyl acrylate) composites latexes were used to finish cotton fabric. The aging resistance, ultraviolet resistance and sterilization properties of finished cotton fabric under UV-irradiation were measured, in order to understand the response mechanism of different crystal TiO2 particles to UV-irradiation and its effect on the performances of finished cotton fabric. It was found that, rutile TiO2 finished cotton fabric exhibits excellent ultraviolet resistance, outstanding aging resistance and bad sterilization properties attributing to the strong optical absorption and diffuse scattering of rutile TiO2 particles, while anatase TiO2 finished cotton fabric excellent ultraviolet resistance, outstanding sterilization and accelerated aging properties attributing to the strong photocatalytic effect of anatase TiO2 particles. The strong photocatalytic effect under UV-irradiation can induce many strong oxidizing free radicals, which can effectively kill bacteria and simultaneously break the molecular chain of fiber inevitably. Thus, the crystal of TiO2 and its negative effects should be careful considered during function finishing of fabric.

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