纳米二氧化钛用于织物的抗菌整理

【作者】 张正君；

【导师】 邓宝祥；

【作者基本信息】 天津工业大学 ， 应用化学， 2008， 硕士

【摘要】 近年来,随着工业的迅速发展和人民生活水平的提高,人们的卫生意识进一步提高,抗菌纺织品越来越受到消费者的喜爱。人们对纳米TiO₂进行了深入的研究,发现纳米TiO₂具有优异的抗菌性能,而且对人体无毒、无害,因此被广泛地应用于纺织品的抗菌整理。本文主要研究了纳米TiO₂用于织物整理的抗菌性能,还介绍了通过浸-轧法将其应用于织物整理的工艺,并对纳米TiO₂进行了表征。对一些常用的抗菌测试方法进行比较,选取适合实验条件的吸收法测试织物的抗菌性能。考察了整理剂浓度、实验菌种、作用时间等因素对纳米TiO₂抗菌效果的影响。并测试了不同整理剂（壳聚糖、壳聚糖和纳米TiO₂复配）整理织物的抗菌性能及不同织物（毛布和腈纶）的抗菌性能。实验表明纳米TiO₂整理织物对大肠杆菌、枯草芽孢杆菌和金黄色葡萄球菌都有比较好的抗菌性,抑菌率基本都达到80%。壳聚糖和纳米TiO₂复配整理后织物的抗菌性能优于单一壳聚糖整理的织物。耐洗性的测试结果表明织物与整理剂形成了牢固结合,整理后织物经过15次洗涤后,抑菌率仍达到80%以上。扫描电镜和红外光谱的测试结果表明,整理后织物表面覆盖了一层TiO₂薄膜。更多还原

【Abstract】 In recent years,with the rapid development of industry and enhancement of people’s living standards,people’s hygienic consciousness enhances further and the antibacterial textiles receive more and more consumer’s affection.People have conducted thorough research to the nano-TiO₂,then discovered the nano-TiO₂ has the outstanding antibacterial activity.Moreover,it is non-toxic,harmless to human body, therefore it was widely applied in the antimicrobial finishing of textile.This article mainly studied the antibacterial activity of the fabrics which treated by nano-TiO₂,introduced the process of applying the nano-TiO₂ to fabrics by means of dip-pad method and characterized the nano-TiO₂ Compared several common antibacterial test methods and choosed the Absorption Method which the best for the test.The effects of the finishing agent concentration,the bacteria species and the reaction time on the impacts of the antibacterial activity of nano-TiO₂ were studied. Tested the antibacterial activity of the fabrics which treated by different finishing agents（chitosan、chitosan and the nano-TiO₂ crossing linking）,and the antibacterial activity of different fabrics（wool、acrylic）which treated by nano-TiO₂.The experiment showed that the nano-TiO₂ treated fabrics have good antibacterial activity against to Escherichia coli、Bacillus subtilis and Staphylococcus aureus,all the percents reduction of bacteria were above 80%.The antibacterial activity of the treated fabrics of crosslinking agent better than chitosan.The treated fabrics have good hand and permeability to water vapour and air,after 15 times standard washing,the percent reduction of bacteria of the fiber was above 80%.There is a titanium dioxide thin coat on the surface of the treated fabrics,this was explained by SEM and FT-IR.更多还原