双亲高聚物核壳型复合粒子的制备及其紫外、荧光特性  

Preparation of Modified Nano Silica Amphiphilic Polymer Core-shell Composite Particles and Its UV,Fluorescence Characteristics

作　　者：毕研迎[1] 陈冬梅[1] 张金娥[1] 张其坤[1] BI Yanying;CHEN Dongmei;ZHANG Jine;ZHANG Qikun(School of Chemistry and Material Science, Shandong Normal University, Jinan 250014, China)

机构地区：[1]山东师范大学化学化工与材料科学学院,济南250014

出　　处：《实验室研究与探索》2018年第12期52-55,共4页Research and Exploration In Laboratory

基　　金：山东省自然科学基金项目(ZR2013EMM004);国家级大学生创新创业训练计划项目(201610445058)

摘　　要：用正硅酸乙酯水解制备出二氧化硅纳米粒子,硅烷偶联剂NQ-51改性二氧化硅纳米粒子,应用超声技术将二氧化硅粒子分散在甲醇介质中,然后通过苯乙烯和乙烯基吡咯烷酮的两步分散聚合制成了以二氧化硅为核,乙烯基吡咯烷酮为壳的无机/有机复合粒子,并通过紫外、荧光、红外、TEM等手段对高聚物进行了表征。通过表征发现,该核壳型复合粒子的紫外吸收谱图产生了红移,并且有了一定的荧光特性,荧光光谱也发生了红移。使得二氧化硅的各种性质如电学性质、光学性质、磁性质、催化性质等有了明显的改善,其实际应用也变得更加广泛。The hydrolysis of TEOS was prepared to produce silica nanoparticles, and silica nanoparticles was modified by silane coupling agent NQ-51. Ultrasonic technology was applied to disperse silica particles into methanol medium, styrene and vinyl pyrrolidone were polymerized with two steps to yield inorganic/organic composite particle which uses silica as coreand vinyl pyrrolidone as shell. By using ultraviolet, infrared, fluorescence, the polymers were characterized by TEM. The UV measurement shows that the absorption spectrum of the core-shell composite particles has red shift, and the fluorescence characteristics of the fluorescence spectrum is also red shifted. The various properties of silica, such as electrical properties, optical properties, magnetic properties, catalytic properties, have been greatly improved, and their practical applications have become more and more extensive.

关 键 词：纳米二氧化硅 分散聚合 无机/有机复合粒子 苯乙烯 乙烯基吡咯烷酮 

分 类 号：TQ317.4[化学工程—高聚物工业]