摘要
用溶胶-凝胶法水解四异丙氧基钛(TTIP)制备纳米级二氧化钛(TiO2)粒子,利用该纳米TiO2粒子,用涂膜法制备玉米醇溶蛋白/纳米TiO2复合膜,分析膜中TiO2含量对复合膜性质的影响。复合膜中TiO2含量为14%时,复合膜的拉伸强度最大为35.2MPa,断裂伸长率为3.0%,水蒸气透湿率为169.9g/(m2.24h);复合膜的光催化实验表明其具有较强的抗菌作用;扫描电子显微镜和原子间力显微镜观察复合膜结构,可以看出TiO2粒子均匀地分布于复合膜中。
A method for preparation of zein/nano-TiO2 composite films was presented using hydrolysis of titanium isopropoxide （TTIP） by the sol-gel method to prepare Nano-TiO2 particles and subsequent casting. Zein/nano-TiCh composite films with different TiO2 contents were tested for their properties. The largest tensile strength of 35.2 MPa, an elongation rate at break of 3.0% and a water vapor permeability of 169.9 g/（m^2 · 24 h） were found at the TiO2 content of 14%. Photocatalytic experiments indicated that the composite film had strong antibiotic activity. Observations under scanning electron microscope （SEM） and atomic force microscope （AFM） revealed that TiO2 particles were evenly distributed in the composite film.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第14期56-60,共5页
Food Science
基金
国家自然科学基金面上项目(31071634)
