以16-12-16胶束模板合成碳酸钙-环糊精复合材料

Preparation of Calcium Carbonate-Cyclodextrin Composite Materials Using 16-12-16 Micelle Templates

用动态光散射实验考察了不同浓度的双子型表面活性剂16-12-16系统,以及16-12-16/正十二醇系统的胶束粒径,并以这两种系统为模板,利用碳酸化法合成了碳酸钙-环糊精复合材料。材料无机相为方解石型碳酸钙,有机相为环糊精。与无模板时合成的材料相比,模板的加入使纳米材料尺寸变小、边缘平滑。无醇的胶束模板的合成产物中,发现层状结构的纳米颗粒,加醇后层状结构消失。研究了模板尺寸、电性与复合材料形貌的关系,讨论了层状结构生成的机制。

Aqueous solutions of gemini surfactant 16-12-16 and 16-12-16/1-dodecanol mixed systems are studied by DLS experiments,which are used as templates to prepare calcium carbonate-cyclodextrin composite materials by carbonation method.The inorganic and organic phase of materials is calcite and cyclodextrin,respectively.Comparing with those of from no-template system,the nano particles yield from surfactants without or with 1-dodecanol is smaller and more edge-smoothed.Particles with layer structure are revealed in the systems without 1-dodecanol while layer structure is not found when 1-dodecanol is added.Relation between sizes、electric charges of templates and materials＇ morphologies is investigated,and the mechanism of layer structure formation is provided.