壳聚糖/氧化铝复合气凝胶的制备和表征  

Synthesis and Characterization of Chitosan/Alumina Hybrid Aerogels

作　　者：常新红[1] 

机构地区：[1]洛阳师范学院化学化工学院,河南洛阳471022

出　　处：《洛阳师范学院学报》2012年第11期45-48,共4页Journal of Luoyang Normal University

基　　金：河南省科技攻关计划资助项目(112102310640)

摘　　要：以壳聚糖和无机铝盐AlCl3.6H2O为原料,通过溶胶-凝胶方法,分别用CO2超临界干燥手段及冷冻干燥手段制备了新型的壳聚糖/氧化铝复合气凝胶.结果表明,壳聚糖的含量影响复合气凝胶的比表面积及孔体积等性质,随着壳聚糖含量的增加,混合气凝胶的比表面积逐渐减小.不同的干燥方法对复合气凝胶的比表面积等性质也有明显的影响.New chitosan/Al2O3 hybrid aerogels were prepared by the sol-gel route with supercritical carbon dioxide（CO2） drying and freeze drying from its corresponding wet-gels.The resulting materials were characterized using nitrogen adsorption/desorption analysis.The results show that both drying methods and contents of chitosan take obvious effect on the textural characteristics of the prepared aerogels.

关 键 词：复合气凝胶 壳聚糖 溶胶-凝胶法 

分 类 号：O648[理学—物理化学]