PMMA分散螺吡喃薄膜的微结构与光致变色行为

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (9): 1868.

PMMA分散螺吡喃薄膜的微结构与光致变色行为

刘浪¹, 龙世军², 张国栋², 周兴平², 贾殿赠¹, 解孝林²

1. 新疆大学应用化学研究所, 乌鲁木齐 830046;
2. 华中科技大学化学与化工学院国家防伪工程技术研究中心, 武汉 430074

收稿日期:2010-03-10 出版日期:2010-09-10 发布日期:2010-09-10
通讯作者: 解孝林, 男, 博士, 教授, 主要从事高分子功能材料研究. E-mail: xlxie@mail.hust.edu.cn
基金资助:
国家自然科学基金(批准号: 20762010)和湖北省自然科学基金(批准号: 2008CDB264)资助.

Microstructure and Photochromic Behavior of PMMA-dispersed Spiropyran Films

LIU Lang¹, LONG Shi-Jun², ZHANG Guo-Dong², ZHOU Xing-Ping², JIA Dian-Zeng¹, XIE Xiao-Lin^2*

1. Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China;
2. National Anti-counterfeit Engineering Research Center, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Received:2010-03-10 Online:2010-09-10 Published:2010-09-10
Contact: XIE Xiao-Lin. E-mail: xlxie@mail.hust.edu.cn
Supported by:
国家自然科学基金(批准号: 20762010)和湖北省自然科学基金(批准号: 2008CDB264)资助.

摘要/Abstract

摘要： 通过溶液成膜法制备了聚甲基丙烯酸甲酯(PMMA)分散螺吡喃薄膜(SP-PMMA)和邻苯二甲酸二正辛酯(DOP)改性的聚甲基丙烯酸甲酯分散螺吡喃薄膜(SP-PMMA-DOP), 系统研究了微结构对薄膜力学性能和光致变色行为的影响. 结果表明, SP-PMMA和SP-PMMA-DOP薄膜均具有较好的力学性质, SP的“稀释效应”降低了PMMA的玻璃化转变温度(T_g), DOP的增容效应和增塑效应提高了SP在PMMA中的分散性, 使PMMA的T_g进一步降低, 薄膜韧性提高. SP-PMMA薄膜具有可逆的光致变色行为, DOP的加入显著提高了薄膜在常温下的光致变色和热褪色速率.

关键词: 光致变色, 聚甲基丙烯酸甲酯, 螺吡喃, 薄膜, 邻苯二甲酸二正辛酯

Abstract: Polymethyl methacrylate-dispersed spiropyran film(SP-PMMA) and its modified film by dioctyl phthalate(DOP) were prepared by solution casting, the effects of the microstructure on their mechanical and photochromic properties were discussed. The results show that the SP-PMMA and SP-PMMA-DOP films have good mechanical strength, the “dilution effect” of SP decreases the glass transition temperature(T_g) of PMMA. The incorporation of DOP further decreases its T_g, enhances the dispersion of SP in PMMA and increases the film toughness due to the compatibilization and plasticization. SP-PMMA and SP-PMMA-DOP films exhibit the reversible photochromic behaviors. The incorporation of DOP increases the coloring and decoloring rates at room temperature.

Key words: Photochromic, Polymethyl methacrylate, Spiropyran, Film, Dioctyl phthalate

TrendMD:

刘浪, 龙世军, 张国栋, 周兴平, 贾殿赠, 解孝林. PMMA分散螺吡喃薄膜的微结构与光致变色行为. 高等学校化学学报, 2010, 31(9): 1868.

LIU Lang, LONG Shi-Jun, ZHANG Guo-Dong, ZHOU Xing-Ping, JIA Dian-Zeng, .... Microstructure and Photochromic Behavior of PMMA-dispersed Spiropyran Films. Chem. J. Chinese Universities, 2010, 31(9): 1868.

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