FAS grafted superhydrophobic ceramic membrane

被引：87

作者：

Lu, Jun ^{[1
,2
]}

Yu, Yun ^{[1
]}

Zhou, Jianer ^{[2
]}

Song, Lixin ^{[1
]}

Hu, Xingfang ^{[1
]}

Larbot, Andre ^{[3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat, Shanghai 200050, Peoples R China

[2] Jingdezhen Ceram Inst, Sch Mat Sci & Engn, Jingdezhen 333001, Peoples R China

[3] UMII, ENSCM, CNRS, Inst Europeen Membranes,UMR 5635, F-34293 Montpellier 5, France

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 22期

关键词：

Surfaces; Superhydrophobic; FAS; Al2O3; membrane; Contact angle; SURFACES; FLUOROALKYLSILANES; STATES; WATER;

D O I：

10.1016/j.apsusc.2009.06.112

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hydrophobic properties of gamma-Al2O3 membrane have been obtained by grafting. uoroalkylsilane (FAS) on the surface of the membrane. The following grafting parameters were studied: the eroding time of the original membrane, the grafting time, the concentration of FAS solution and the multiplicity of grafting. Hydrophobicity of the membranes was characterized by contact angle (CA) measurement. The thermogravimetric analysis (TGA) was used to investigate the weight loss process (25-800 degrees C) of the. uoroalkylsilane grafted on Al2O3 powders under different grafting conditions. The morphologies of the membranes modified under different parameters were examined by field emission scanning electron microscopy (FE-SEM) and the surface roughness (Ra) was measured using white light interferometers. A needle-like structure was observed on the membrane surface after modi. cation, which causes the change of Ra. On the results above, we speculated a model to describe the reaction between FAS and gamma-Al2O3 membrane surface as well as the formed surface morphology. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：9092 / 9099

页数：8