以明胶为模板制备复合空腔微球  

Preparation of Composite Hollow Microspheres on Gelatin Spheres as Templates

作　　者：丁素丽[1] 朱以华[1] 杨晓玲[1] 

机构地区：[1]华东理工大学超细材料制备与应用教育部重点实验室,上海200237

出　　处：《无机材料学报》2004年第5期991-996,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金(20276019);国家863计划(2002AA302208);上海市纳米专项(0243nm069)

摘　　要：以明胶微球为模板,采用层层自组装技术制备了明胶/SiO2/PAH复合微球,并用热水溶解模板得到了SiO2/PAH复合空腔微球.通过用ζ电位、TEM、IR、TG等测试手段对其样品进行表征分析.结果表明,SiO2/PAH有效地组装在明胶微球上,形成了核壳式结构,模板去除后得到空腔结构.在溶解模板的过程中,通过对明胶水解产物氨基酸含量的测定,发现SiO2/聚电解质的存在具有一定的缓释性.The gelatin/SiO2/PAH composite microspheres using gelatin spheres as templates were fabricated by layer-by-layer self-assembly. Templates were removed by dissolving in hot water and the hollow SiO2/PAH microspheres were produced. Samples were characterized by zeta - potential, TEM, IR, TG, etc. measurements. The results showed that SiO2/PAH was assembled effectively on gelatin spheres and formed core-shell structure, and hollow structure was obtained by removing gelatin. In the process of dissolving templates, slow-releasing effect of hollow microspheres was found by the determination of amino acids from the hydrolyzed gelatin.

关 键 词：明胶微球 复合微球 空腔微球 层层自组装 缓释性 

分 类 号：TB322[一般工业技术—材料科学与工程]