超疏水滤纸的制备与应用  

Preparation and Application of Super-hydrophobic Filter Paper

作　　者：周聪[1] 陈硕[2] 朱卫桃[1] 袁平[1] 杨子辉[1] 李彬[1] 陈波[1] 

机构地区：[1]湖南师范大学"化学生物学及中药分析"教育部重点实验室,长沙410081 [2]湖南大学材料科学与工程学院,长沙410082

出　　处：《应用化学》2012年第3期297-303,共7页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(20927005);湖南省研究生创新课题(CX2010B221)资助项目

摘　　要：对SiO2纳米粒子进行硅烷化改性,再将其修饰到滤纸上,制备出静态水接触角>150°的超疏水滤纸,对制备条件进行了优化。用热重分析及扫描电子显微镜对超疏水滤纸表征后发现,二氧化硅纳米粒子在滤纸纤维表面形成一层包裹层,即纳米级粗糙结构,这种结构对滤纸的疏水性具有关键作用。对滤纸的油水分离性能进行了研究,发现其对非均相体系和高粘度油水混合物具有很好的分离效果。Super-hydrophobic filter papers were prepared by using SiO2 nano-particles midified by silylating reagent. The water contact angle on the filter papers was higher than 150°. Thermogravimetry and scanning electron microscope were used to characterize the filter paper. The results showed that SiO2 nano-partiele layer was formed on the micro-fibers of filter paper. The combined nano- and micro-structure produced the super- hydrophobie property of the filter paper. The oil-water separation ability of the paper was also investigated, high oil-water separation efficiencies of the paper, especially for high-viscosity mixtures, were confirmed.

关 键 词：超疏水滤纸 纳米粒子 硅烷化改性 油水分离 

分 类 号：O647[理学—物理化学]