以双子表面活性剂模板合成碳酸钙-环糊精复合材料

Preparation of calcium carbonate-cyclodextrin composite materials by gemini surfactant templates

以阳离子双子表面活性剂溴化N,N,N’,N’-四甲基-N,N’-双十二烷基-1,6-己二铵(12-6-12)与阴离子表面活性剂十二烷基硫酸钠(SDS)混合系统,以及12-6-12/正丁醇/正辛烷/水微乳系统为模板,利用碳酸化法合成了具有贝壳珍珠层"砖-泥"结构碳酸钙-环糊精仿生复合材料。以X射线衍射(XRD)、红外光谱(IR)、透射电镜(TEM)表征产品的组成与形貌。讨论了模板尺寸、电性与复合材料形貌的关系。提出了"砖-泥"式层状结构生成机制。

Mixed aqueous solution of cationic gemini surfactant hexamethylene-1,6-bis （dodecyldimethylammonium bro- mide （ 12-6-12） and anionic surfactant sodium dodecyl sulfate （SDS）, and I2-6-12/n-butanol/n-octane/water microemuI- sion were used as templates to prepare calcium carbonate-cyclodextrin composite materials with brick-and-mortar structures like nacre.Structures and morphologies of materials were characterized by XRD, IR, and TEM experiments.Relationship be- tween sizes and electric charges of templates and materials＇ morphologies was investigated, and the mechanism of brick-and- mortar structure formation was also put forward.