溶剂挥发法制备聚苯乙烯壁材光致变色微胶囊  

Preparation of polystyrene wall photochromic microcapsules by solvent evaporation

作　　者：陈鑫 费良 殷允杰 王潮霞 CHEN Xin;FEI Liang;YIN Yunjie;WANG Chaoxia(Key Laboratory of Eco-Textiles,College of Textile Science and Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China)

机构地区：[1]江南大学纺织科学与工程学院生态纺织教育部重点实验室,江苏无锡214122

出　　处：《精细化工》2023年第1期63-68,共6页Fine Chemicals

基　　金：国家自然科学基金(21975107)。

摘　　要：针对螺吡喃类有机光致变色材料在实际应用中的耐疲劳性差的问题,以N-羟乙基-3,3-二甲基-6-硝基吲哚啉螺吡喃的正辛烷分散液为芯材,聚苯乙烯为壁材,采用溶剂挥发法制备了螺吡喃光致变色微胶囊,通过SEM和纳米粒度及Zeta电位分析仪对其进行了形貌和粒径测试,并将制得的光致变色微胶囊印花到棉机织白布上,得到光致变色微胶囊印花织物。结果表明,光致变色微胶囊包覆完整,表面光滑,平均粒径约为700 nm,粒径分布比较分散。光致变色微胶囊具有良好的变色性能,紫外光照射20 s左右即可完全变色,黑暗环境下450 s能够恢复至初始状态,光致变色微胶囊的印花织物变色前后的色差达到36.10,且在经过20次变色循环后仍具有良好的光变耐疲劳性能。In order to improve the poor fatigue resistance of spiropyran organic photochromic materials in practical applications,photochromic microcapsules were prepared via solvent evaporation method using N-hydroxyethyl-3,3-dimethyl-6-nitroindolin spiropyran and n-octane dispersion as core material and polystyrene as wall material.The morphology and particle size were characterized by SEM and nano particle sizer and Zeta potential analyzer.And then photochromic fabrics were obtained by printing the synthesized photochromic microcapsules on fabrics.The results showed that the microcapsules,with an average particle size of about 700 nm and relatively dispersed particle size distribution,were coated intactly and smoothly.The photochromic microcapsules obtained exhibited good discoloration performance with color completely changed from white to purple in about 20 s under UV irradiation,and could return to the initial state in 450 s in a dark environment.The color difference of printed fabrics with photochromic microcapsules before and after discoloration reached 36.10,and it still maintained good photochromic fatigue resistance after 20 cycles of discoloration.

关 键 词：螺吡喃 光致变色微胶囊 溶剂挥发法 聚苯乙烯 光致变色织物 功能材料 

分 类 号：TB34[一般工业技术—材料科学与工程] TS106[轻工技术与工程—纺织工程]