接触角
材料科学
X射线光电子能谱
原子转移自由基聚合
傅里叶变换红外光谱
化学工程
纤维素
润湿
聚合
扫描电子显微镜
膜
滤纸
高分子化学
聚合物
复合材料
化学
工程类
生物化学
作者
Hui Wu,Wu Longhui,Shengchang Lu,Xinxing Lin,He Xiao,Xinhua Ouyang,Shilin Cao,Lihui Chen,Liulian Huang
标识
DOI:10.1016/j.carbpol.2017.08.078
摘要
Robust superhydrophobic and superoleophilic cellulose-g-PFOEMA filter paper membranes were fabricated via surface grafting of poly(perfluorooctylethyl methacrylate) (PFOEMA) using atom transfer radical polymerization (ATRP). The surface chemical compositions, morphologies and wettability of cellulose-g-PFOEMA with different degree of graft ratio (DG) were investigated using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and contact angle (CA) measurement. IR and XPS showed that PFOEMA were introduced into surface of filter paper. The superhydrophobicity of filter paper increased with amount of PFOEMA grafted. When DG of grafted PFOEMA was higher than 11.2%, the superhydrophobicity reached a steady state and the measured water contact angle was about 157°. The PFOEMA-grafted filter paper exhibited excellent chemical resistance toward a wide range of pH solution from 1 to 12. Cellulose-g-PFOEMA is convenient for oil/water separation with efficiency higher than 95%. The excellent reusability and stability make cellulose-g-PFOEMA filter paper membrane a promising candidate in the applications of oil spillage cleanup and the separation of oil/water mixture.
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