纳米氧化钨复合棉纤维的制备及其光致变色性能  

Preparation of nano-tungsten oxide composite cotton fiber and its photochromic properties

作　　者：王玉婷 凌忠文 杨欣 刘宇清[1] WANG Yuting;LING Zhongwen;YANG Xin;LIU Yuqing(College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215123, China)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215123

出　　处：《纺织学报》2021年第2期21-26,40,共7页Journal of Textile Research

摘　　要：针对氧化钨晶相结构不稳定,光变色响应时间长,寿命短等问题,先采用水热一步法制备浅黄色氧化钨纳米棒,再通过磁力搅拌将其均匀分散到聚乙烯醇溶液中,最后采用快速连续的浸渍涂覆工艺在棉纤维表面涂覆氧化钨纳米棒,制备光致变色纤维,并对其结构和性能进行表征。研究结果表明:光致变色纤维在紫外光照射下,在1 min内颜色由最初的淡黄色变为灰蓝色,并在5 min内逐渐变为深蓝色;在红外灯加热处理过程中,纤维的颜色在约2 h内恢复到其初始状态,表现出从浅黄色到深蓝色的快速、可逆的颜色切换。该光致变色纤维可规模化生产,可编织成各种图案,在开发光致变色纺织品方面具有很大的潜力。In order to solve the problems of unstable crystal structure,long photochromic response time and short life of tungsten oxide,light yellow tungsten oxide nanorods were prepared by the hydrothermal one-step method for uniform dispersion into polyvinyl alcohol solution with aid of magnetic stirring.Cotton fiber was coated with tungsten oxide nanorods by rapid and continuous impregnation coating process,and its structure and properties were characterized.The results show that under the irradiation of ultraviolet light,the color of photochromic fiber changes from light yellow to grayish blue in 1 min,and gradually to dark blue in 5 min,and the color of photochromic fiber returns to its initial state in about 2 h during infrared heating treatment,showing a fast and reversible color switch from light yellow to dark blue.The photochromic fiber can be produced on a large scale and can be woven into various patterns,which has great potential in developing photochromic textiles.

关 键 词：光致变色纤维 氧化钨纳米棒 水热一步法 溶液涂覆法 智能服装 

分 类 号：TS11[轻工技术与工程—纺织材料与纺织品设计]