Page 71 - 《精细化工》2023年第1期

第 40 卷第 1 期 精 细 化 工 Vol.40, No.1
20 23 年 1 月 FINE CHEMICALS Jan. 2023

功能材料
溶剂挥发法制备聚苯乙烯壁材光致变色微胶囊

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陈 鑫，费 良，殷允杰，王潮霞
（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）

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。
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
中图分类号：TB34；TS106 文献标识码：A 文章编号：1003-5214 (2023) 01-0063-06

Preparation of polystyrene wall photochromic

microcapsules by solvent evaporation

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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）

Abstract: 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.
Key words: spiropyran; photochromic microcapsules; solvent evaporation method; polystyrene;
photochromic fabrics; functional materials

螺吡喃是一种有机光致变色材料，具有光致变 种化合物（A）在受到一定波长光照射时，可进行
色性能，呈现变色响应速率快的特点，是研究较多 特定的化学反应，获得产物（B），结构的改变导致
[1]
的一种有机光致变色材料 。光致变色性能是指一 其吸收光谱发生明显的变化，而在另一波长的光照

收稿日期：2022-04-23; 定用日期：2022-07-25; DOI: 10.13550/j.jxhg.20220387
基金项目：国家自然科学基金（21975107）
作者简介： 陈 鑫（1998—），男，硕士生，E-mail：914341071@qq.com。联系人：王潮霞（1969—），女，教授，E-mail：wangchaoxia@
sohu.com。