光致变色多孔聚苯乙烯功能微球的制备和性能  

Preparation of functionalized porous photochromic polystyrene microspheres and their performance

作　　者：孙静[1] 裴广玲[1] 

机构地区：[1]北京服装学院材料科学与工程系,北京100029

出　　处：《化学研究》2011年第2期17-20,共4页Chemical Research

基　　金：教育部科学技术研究重点项目(208004)

摘　　要：以甲苯/庚烷为致孔剂,利用分散聚合技术制备了多孔交联聚苯乙烯微球.研究了聚合单体、引发剂、稳定剂、交联剂等对微球平均粒径的影响,并初步评价了其在常温常压下吸附光致变色材料后的光致变色性能.结果表明,在最佳条件下制得的多孔聚合物微球平均粒径为1μm;吸附光致变色材料后,其在紫外或日光照射下具有快速可逆的光致变色功能.利用共混或涂层技术可以将光致变色微球制备成光致变色材料;通过对变色微球进行表面包覆,可进一步提高其变色持久性.Porous cross-linked polystyrene microspheres were prepared by disperse polymerization in the presence of toluene/heptane as pore-forming agents.The effects of monomer,initiating agent,stabilizer,and cross-linker on the average size of the microspheres were investigated,and the photochromic performance of the porous polystyrene microspheres after adsorbing photochromic materials at ambient temperature and pressure was primarily evaluated.Results indicate that the porous polystyrene microspheres obtained under the optimized conditions have an average grain size of 1 μm.After adsorbing photochromic materials,the porous microspheres were able to rapidly reverse color under ultraviolet or sun light irradiation.Besides,the porous photochromic polystyrene microspheres could be fabricated into photochromic materials by using blending or coating technology;and it was feasible to improve their long lasting discoloring performance by surface-capping.

关 键 词：光致变色 聚苯乙烯微球 制备 性能 

分 类 号：TB34[一般工业技术—材料科学与工程]