作　　者： ;

机构地区： 韶关学院化学与环境工程学院

出　　处： 《合成材料老化与应用》 2007年第1期13-15,26,共4页

摘　　要： 以相转化法制备了N-乙酰化壳聚糖超滤膜,探讨了不同的致孔剂和蒸发条件对膜孔结构的影响,并用扫描电镜对其表面形貌进行了分析,并对膜的机械性能和对染料溶液酸性红B的分离性能进行了考察。分析结果表明:以乙醇为致孔剂、红外蒸发干燥10min制备的多孔壳聚糖膜孔径均匀,孔隙率高;膜的机械性能好,膜在干、湿态下的最大抗张强度分别达到445.4Kg/m2和182.4Kg/m2;膜的分离性能好,渗透通量达到2.1ml/cm2.h,截留率达到96.3%。 Porous chitosan ultrafiltration membranes were prepared by the reaction of chitosan and acetic anhydride in the medium acetic and additive ethanol or acetone or acetal, used to separated acid color B solution. The surface structure of the porous chitosan membranes were examined by SEM, and the mechanical properties and sep- aration performances were reviewed. The result showed that the porous chitosan membranes prepared as additive ethanol and vaporized 10 mintunes by infrared ray possessed controlled poresizes, bigger porosity and specific surface area. The porous chitosan membranes possessed better mechanical properties and separation performances, the biggest tensile strength was 445.4 Kg/m^2 （ in dry state） and 182. 4Kg/m^2 （ in wet state）, the penetrate flux was 2. 1ml/cm^2 · h, the rejection was 96. 3%.

关 键 词： 壳聚糖 超滤膜 致孔剂 渗透通量 截留率

领　　域： [化学工程]