利用介孔分子筛SBA-15的介孔孔道结构,通过调节引发剂过氧化苯甲酰的用量,在其内部进行了甲基丙烯酸甲酯(MMA)的原位溶液聚合反应,利用X射线衍射、N2吸附-脱附、傅里叶变换红外光谱、凝胶渗透色谱、热重、差示扫描量热等测试手段对所得复合材料及孔道内的聚合物进行研究.结果表明,聚合后,复合材料的比表面积、孔径、孔容降低,但仍保持介孔结构;孔道内聚合物相对分子质量是常规溶液聚合的几十倍,随着引发剂用量的增加,孔道内部聚合的PMMA含量增加,相对分子质量下降,相对分子质量分布变宽,热稳定性提高,玻璃化转变温度降低.
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