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采用水溶性羟丙基甲基纤维素HPMC对无机纳米ZnO粒子进行物理吸附处理 ,获得了核为无机纳米ZnO ,外壳为水溶性高分子HPMC的粒子。然后在其上进行了甲基丙烯酸甲酯的接枝聚合。采用红外光谱、差热分析的方法对复合粒子进行了表征 ,并采用透射电镜观察了粒子的形貌。红外光谱表明在纳米ZnO的表面吸附了HPMC并接枝了PMMA ,差热分析表明HPMC ,HPMC g PMMA和ZnO/HPMC g PMMA的热稳定性逐渐提高 ,透射电镜观察表明 ,在纳米ZnO的表面粘附了一层聚合物 ,成功地实现了纳米粒子的表面修饰。
Adopting water-soluble hydroxypropylmethyl cellulose (HPMC) as HPMC, the inorganic nano-ZnO particles were physically adsorbed, and the particles with inorganic nano-ZnO as the core and water-soluble polymer HPMC as the shell were obtained. Then, the graft polymerization of methyl methacrylate was carried out thereon. The composite particles were characterized by infrared spectroscopy and differential thermal analysis. The morphology of the particles was observed by transmission electron microscopy. Infrared spectrum showed that HPMC was adsorbed on the surface of nano-ZnO and grafted PMMA. Differential thermal analysis showed that the thermal stability of HPMC, HPMC g PMMA and ZnO / HPMC g PMMA increased gradually. The transmission electron microscopy showed that the surface of nano- Attached to a layer of polymer, the successful realization of the nano-particle surface modification.