超声法制备壳聚糖/β-CD／纳米TiO2三元复合膜及其性能研究  

Preparation and properties of chitosan/β-CD/TiO_2 nanoparticles composite films with ultrasonic wave

作　　者：郭振良[1] 任淑华[1] 栾丽美 孙洪彬[1] 

机构地区：[1]鲁东大学化学与材料科学学院,烟台264025 [2]烟台市汽车工程职业学院,烟台265500

出　　处：《膜科学与技术》2008年第3期59-63,共5页Membrane Science and Technology

基　　金：鲁东大学基金资助项目(042911)

摘　　要：采用水解与均匀沉淀法相结合,制备了锐钛型纳米TiO2粉末,并用十二烷基硫酸钠(SDS)对其进行了改性.以壳聚糖、β-环状糊精(β-CD)、SDS改性的纳米TiO2为成膜材料,用超声法及流延法制得分散较均匀的纳米复合膜,用UV,XRD,SEM等表征其结构.试验结果表明,其透光率和溶胀率随TiO2质量分数的增大而逐渐下降.当纳米TiO2在复合膜中的质量分数为2%时,复合膜具有良好的抗张强度和抗菌性能.The nanometer anatase TiO2 powders were prepared by hydrolysis and homogeneous precipitation. The morphology of the nanometer anatase TiO2 powders was changed with sodium dodecyl sulfate（SDS）. The changed nanometer TiO2 and β- cyclodextrin（β -CD） were dispersed into chitosan/acetic acid solution by ultrasonic wave to get composite films through solution cast technique. The composite films were characterized by UV,XRD,SEM. The experimental results show the optical transmittance and the water swelling ratio of the composite films gradully decline along with the mass fraction of TiO2 adding in the composite films. As the mass fraction of TiO2 is 2 % in the composite films, the composite films have nice tensile strength and antibacterial activity

关 键 词：壳聚糖 Β-环状糊精 锐钛型纳米TiO2 复合膜 制备 性能 

分 类 号：TB383.2[一般工业技术—材料科学与工程]