洛阳师范学院学报
洛暘師範學院學報
락양사범학원학보
Journal of Luoyang Teachers College
2012年
11期
45~48
,共null页
复合气凝胶 壳聚糖 溶胶-凝胶法
複閤氣凝膠 殼聚糖 溶膠-凝膠法
복합기응효 각취당 용효-응효법
hybrid aerogels; chitosan; sol-gel route
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.
以殼聚糖和無機鋁鹽AlCl3.6H2O為原料,通過溶膠-凝膠方法,分彆用CO2超臨界榦燥手段及冷凍榦燥手段製備瞭新型的殼聚糖/氧化鋁複閤氣凝膠.結果錶明,殼聚糖的含量影響複閤氣凝膠的比錶麵積及孔體積等性質,隨著殼聚糖含量的增加,混閤氣凝膠的比錶麵積逐漸減小.不同的榦燥方法對複閤氣凝膠的比錶麵積等性質也有明顯的影響.
이각취당화무궤려염AlCl3.6H2O위원료,통과용효-응효방법,분별용CO2초림계간조수단급냉동간조수단제비료신형적각취당/양화려복합기응효.결과표명,각취당적함량영향복합기응효적비표면적급공체적등성질,수착각취당함량적증가,혼합기응효적비표면적축점감소.불동적간조방법대복합기응효적비표면적등성질야유명현적영향.
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.
