纳米镓/聚甲基丙烯酸甲酯复合材料的原位超声合成与表征  

In-situ ultrasonic preparation of nano-Ga/PMMA composites and characterization of it

作　　者：徐国财[1] 王贞平[1] 熊金钰[1] 吉小利[1] 王艳丽[1] 

机构地区：[1]安徽理工大学化学工程系,安徽淮南232001

出　　处：《现代化工》2006年第2期37-40,共4页Modern Chemical Industry

基　　金：科技部重大基础研究项目(2003CCA03700);安徽省自然科学基金(050440907);安徽省教育厅自然科学基金(2005KJ015ZD);安徽理工大学引进人才基金(2004YB49)资助

摘　　要：超声作用于低熔点金属镓。使其超细化为纳米级的镓粒子，并采用无引发剂的乳液聚合方法制备出Ga／聚甲基丙烯酸甲酯（PMMA）纳米复合粒子，并分析了其微观结构。结果表明纳米镓的形态和结构因有无表面改性剂而不同；乳液聚合得到的纳米镓复合粒子是核壳结构型。粒子大小为50-80nm。内核金属镓粒径为30-50nm，与聚合物存在一定的化学作用。The preparation of nano-Ga particles, the surface-modification of gallium nanoparticlcs by ultrasonic were studied.The nanocomposites of Ga/PMMA with core shell structure were prepared through emulsion polymerization without initiator and then characterized. The results indicated that the size of Ga/PMMA composite nanoparticles was about 50 - 80 nm with 30 - 50 nm Ga particles as the inner cores. The testing results showed that there were chemical actions between Ga and oxygen of carbonyl within PMMA.

关 键 词：聚甲基丙烯酸甲酯 纳米镓粒子 超声 乳液聚合 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]