中文摘要：

以3-氨丙基三甲氧基硅烷（APMS）和正硅酸乙酯（TEOS）为硅源, 与阴离子聚合物聚丙烯酸（PAA）链之间通过S-N＋-I-机理组装合成了聚丙烯酸-二氧化硅（PAA/SiO2）复合纳米球. SEM, TEM, TG和FTIR表征结果表明, 合成的纳米球是聚丙烯酸和二氧化硅复合物, 平均直径约为80 nm. 在合成PAA/SiO2复合纳米球的体系中, 加入不同量的有机溶剂THF能够调控复合球的尺度.

英文摘要：

The anionic polymer, poly（acrylic acid）（PAA）, was used to synthesize composite nanospheres of PAA/silica with 3-aminopropyltrimethoxysilane（APMS） and tetraethyl orthosilicate（TEOS） as silica source. In the synthesis, the assembly of PAA, APMS and TEOS follows the mechanism of the anionic surfactant templated mesoporous silica（AMS） through a S-N＋-I- pathway, where S stands for the anionic PAA, I stands for inorganic precursors（TEOS） and N stands for co-structure-directing agent（APMS）. The results of SEM, TEM, TG and FTIR show that the average size of composite nanospheres of PAA/silica is 80 nm. Furthermore, it was proved that addition of organic solvent such as THF could tune the size of the composite spheres.