林业工程学报2017，Vol.2Issue(5)：31-35,5.DOI:10.13360/j.issn.2096-1359.2017.05.006
纳米TiO2/硬脂酸超疏水材料的制备与表征
Preparation and characterization of nano TiO2 / stearic acid superhydrophobic material
摘要
Abstract
In order to study the industrial-scale nano titanium dioxide (TiO2 ) hydrophobic modification process, the low cost nontoxic tetrabutyl titanate, stearic acid and anhydrous ethanol were chosen as raw materials. Through the analysis of the optical contact angle data, the process for preparing the nano titanium dioxide superhydrophobic composite materi-al with the optimal water contact angle was obtained: 0.2 g nano titanium dioxide and 70 mL anhydrous ethanol were mixed and ultrasonically dispersed for 1 h. Then, 1 g stearic acid was added into the mixed liquid, and the ultrasonic dispersion was carried out again for 30 min. Thereafter, the mixed liquid was stirred first at 70℃ for 12 h and then at room temperature for 6 h. Finally, the same volume of anhydrous alcohol was added into the mixture, and the superna-tant was removed by centrifugation. The residue was dried in an oven at 120℃. The water contact angle of the hydropho-bic material obtained was 166°. The process is simple and cost-effective, and the product shows good hydrophobicity. It is suitable for industrial application and has great commercial value. The underlying mechanism was investigated by using Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (SEM) and so on, and the results showed that stearic acid was chemically adsorbed on the surface of the material.关键词
修饰工艺/纳米TiO2/疏水修饰/硬脂酸/超疏水Key words
modification process/nano TiO2/hydrophobic modification/stearic acid/super hydrophobic分类
轻工纺织引用本文复制引用
曹坤丽,吴燕,曹福才,朱彦涛,朱文凯..纳米TiO2/硬脂酸超疏水材料的制备与表征[J].林业工程学报,2017,2(5):31-35,5.基金项目
江苏省 2016 年度普通高校研究生实践创新计划项目(SJLX16-0360) （SJLX16-0360）
中国博士后特别资助项目(2014T70529). （2014T70529）
