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以聚苯乙烯球为模板,水解钛酸四正丁酯制备出了空心TiO2微球.采用原子转移自由基聚合法合成了聚N,N-二乙基胺基甲基丙烯酸乙酯(PDEAEMA)高分子链,利用“点击”化学在空心TiO2微球表面接枝PDEAEMA高分子链,季铵化后与贵金属离子进行离子交换用硼氢化钠还原得TiO2-Q-PDEAEMA/M (0)复合纳米微球.通过傅里叶变换红外光谱(FT-IR)、X-射线光电子能谱(XPS)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)等对制备的复合微球进行了表征.结果表明,TiO2-Q-PDEAEMA/M(0)空心纳米复合微球在水中的分散行为具有pH敏感性.

参考文献

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