自乳化法制备光致变色微球  

Preparation of photochromic particles via self-emulsifying process

作　　者：张婷[1,2] 符柳娃 陈志康[1] 崔艳艳[1] 刘晓暄[1] ZHANG Ting FU Liuwa CHEN Zhikang CUI Yanyan LIU Xiaoxuan(Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006,China College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000,China)

机构地区：[1]广东工业大学广东省功能软凝聚态物质重点实验室材料与能源学院,广州510006 [2]闽南师范大学化学与环境学院,福建漳州363000

出　　处：《功能材料》2016年第B06期234-237,244,共5页Journal of Functional Materials

基　　金：国家自然科学青年科学基金资助项目(51403041)

摘　　要：以甲基丙烯酸甲酯、丙烯酸正丁酯、丙烯酸等为单体,二丙烯酸-1,6-己二醇酯为交联剂,采用自乳化法制备了丙烯酸酯乳液。乳液的平均粒径为249nm,具有较好的单分散性。用该乳液对自制的光致变色材料螺吡喃进行包裹,获得了光致变色微球。在常温下,采用紫外-可见光谱对光致变色微球的变色性质及抗疲劳性进行了检测,并通过建立半数吸光度可逆变色循环次数参数Z50,将包裹了螺吡喃的微球与未包裹的螺吡喃溶液进行对比,发现包裹后的微球除了具备良好的光致变色性质外,其抗疲劳性亦远高于其溶液。An acrylic emulsion was prepared by methyl methacrylate （MMA）,butyl acrylate （BA）,acrylic acid （AA）and 1 ,6-hexanedioldiacrylate（HDDA）via self-emulsifying process.The emulsion paticles had an average diameter of 249 nm and showed narrow polydispersity.The photochromic particles were prepared by doping photo-responsive spiropyran into the emulsion.The photochromism and fatigue resistance of the particles were determined by UV-Vis spectrum at ambient temperature.Owning to the parameter Z50 ,which was the number of cycles required to reduce the initial absorbance atλmax by 50%,the fatigue resistance of spiropyran was deter-mined quantitatively.According to the results,the Z50 of the particles was much higher than that of the solu-tion.It demonstrated that the spiroyran particles had excellent fatigue resistance as well as photochromism.

关 键 词：光致变色 自乳化 螺吡喃 微球 

分 类 号：TB381[一般工业技术—材料科学与工程]