基于微凝胶模板法制备新型P(AM-co-MAA)/Cu_2O复合微球的研究

Study on preparation of P(AM-co-MAA)/Cu_2O composite microspheres by microgel template method

采用反相乳液聚合法合成的P(AM-co-MAA)高分子微球为模板,经Cu(Ac)2溶液溶胀后,以抗坏血酸为还原剂,通过两相界面反应,制得新型P(AM-co-MAA)/Cu2O有机-无机复合微球材料.考察了抗坏血酸用量、Cu(Ac)2浓度、反应温度、NaOH用量等因素对复合微球形貌和组成的影响.利用扫描电子显微镜(SEM)、傅里叶红外分析仪(FT-IR)、热重分析仪(TG)、X射线衍射分析仪(XRD)对复合微球的表面形貌和组成进行了表征.实验表明,高分子的模板作用使得复合微球整体上呈现球状结构,微球大小主要决定于模板的尺寸.由于此复合微球不仅具有微米级材料容易分离的优点,而且同时兼有纳米级颗粒比表面积大的特点,因此,这类材料有望在构筑纳米反应器、负载催化剂以及制备杀菌材料等方面具有广阔的应用前景.

Acrylic amide （AM） and methacrylic acid （MAA） copolymer hydrogel microspheres were prepared by reverse emulsion polymerization method. The resulting microgels were employed as template for the deposition of cuprous oxide on the surface of microgels. Using this method, the P （AM-co-MAA）/Cu2O composite microspheres were obtained. The morphology and composition of the composite microspheres materials have been characterized by SEM, FT- IR, TG and XRD, respectively. It was demonstrated that the shape of hydrogel template makes the composite material microspherical. The material is not only easy to be seperated due to the whole sphere in micron-size but also large in surface area due to inorganic componenes on the sphere in nano-size. Therefore, the prepared material has a broad application prospects, for example, constructing structral nanometer reactor, the loading catalyst as well as preparation of bactericide material.