Ni/PMMA纳米复合微球的制备  

PREPARATION AND CHARACTERIZATION OF Ni/PMMA NANOCOMPOSITES MICROSPHERES

作　　者：孙慧群[1] 朱国兴[1] 周菊红[1] 唐业仓[1] 魏先文[1] 

机构地区：[1]安徽师范大学化学与材料科学学院安徽省功能性分子固体重点实验室

出　　处：《安徽师范大学学报（自然科学版）》2005年第4期430-434,共5页Journal of Anhui Normal University(Natural Science)

基　　金：国家自然科学基金(20490210;20271002);安徽省优秀青年科技基金(04046065);安徽省教育厅自然科学基金重点项目(2001KJ115ZD);安徽师范大学博士启动基金

摘　　要：采用液相还原法制备了Ni/PMMA纳米复合微球,对其结构进行了X-射线粉末衍射(XRD)、透射电镜(TEM)表征.并且还探讨了还原剂种类、PMMA的质量分数、溶剂等对复合结构的影响.实验结果表明,Ni纳米粒子对PMMA微球的包覆均匀厚实,利用KBH4作还原剂得到的镍包覆层是非晶态,较大的PMMA质量分数有利于形成连续均匀的包覆,利用乙醇-水体系作溶剂得到的复合结构粒径较用纯水作溶剂得到的复合结构小,利用N2H4.H2O作还原剂得到的镍包覆层是面心立方晶态,复合结构粒径较原始PMMA微球明显变小.Ni/PMMA （poly（methylmethacrylate）） nanocomposites microspheres were prepared through solution phase reduction, which were characterized by X-ray powder diffraction （XRD） and transmission electron microscope （TEM）. The influence of reduction agent, mass fractions of PMMA, and solvent on the composites structures were studied. The results indicated that non-crystal nickel layer was coated on PMMA microspheres continuously and homogeneously. Using KBH4 as reduction agent, larger mass fractions of PMMA was favor of forming more continuous and homogeneous cladding layer and the composites microspheres with smaller diameters were obtained when the alcohol-water solvent was used. Using N2H4 · H2O as reduction agent, crystal Ni was coated on PMMA spheres and the diameters of the Ni/PMMA composites microspheres were much smaller than those of original PMMA microspheres.

关 键 词：镍 聚甲基丙烯酸甲酯(PMMA) 液相还原 纳米复合材料 

分 类 号：O614.813[理学—无机化学]