Surface studies on superhydrophobic and oleophobic polydimethylsiloxane-silica nanocomposite coating system

被引：64

作者：

Basu, Bharathibai J. ^{[1
]}

Kumar, V. Dinesh ^{[1
]}

Anandan, C. ^{[1
]}

机构：

[1] CSIR Natl Aerosp Labs, Surface Engn Div, Bangalore 560017, Karnataka, India

来源：

APPLIED SURFACE SCIENCE | 2012年 / 261卷

关键词：

Superhydrophobic; Oleophobic; PDMS; Nanocomposite; WCA; Oil CA; NANOPARTICLES; WETTABILITY;

D O I：

10.1016/j.apsusc.2012.08.103

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：

Superhydrophobic and oleophobic polydimethylsiloxane (PDMS)-silica nanocomposite double layer coating was fabricated by applying a thin layer of low surface energy fluoroalkyl silane (FAS) as topcoat. The coatings exhibited WCA of 158-160 degrees and stable oleophobic property with oil CA of 79 degrees. The surface morphology was characterized by field emission scanning electron microscopy (FESEM) and surface chemical composition was determined by energy dispersive X-ray spectrometery (EDX) and X-ray photoelectron spectroscopy (XPS). FESEM images of the coatings showed micro-nano binary structure. The improved oleophobicity was attributed to the combined effect of low surface energy of FAS and roughness created by the random distribution of silica aggregates. This is a facile, cost-effective method to obtain superhydrophobic and oleophobic surfaces on larger area of various substrates. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：807 / 814

页数：8

共 24 条

[1] A simple method for the preparation of superhydrophobic PVDF-HMFS hybrid composite coatings [J].

Basu, Bharathi Bai J. ;

Paranthaman, Ashok Kumar .

APPLIED SURFACE SCIENCE, 2009, 255 (08) :4479-4483

[2]

Briggs D., 1984, PRACTICAL SURFACE AN

[3] Sol-gel synthesis and pyrolysis study of oxyfluoride silica gels [J].

Campostrini, R ;

Ischia, M ;

Carturan, G ;

Armelao, L .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2002, 23 (02) :107-117

[4] Wettability of porous surfaces. [J].

Cassie, ABD ;

Baxter, S .

TRANSACTIONS OF THE FARADAY SOCIETY, 1944, 40 :0546-0550

[5] Facile fabrication of superhydrophobic polysiloxane/magnetite nanocomposite coatings with electromagnetic shielding property [J].

Ding, Xiaofeng ;

Zhou, Shuxue ;

Gu, Guangxin ;

Wu, Limin .

JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, 2011, 8 (06) :757-764

[6] Superhydrophobic and Oleophobic Surfaces Fabricated from Incompletely Condensed Polyhedral Oligomeric Silsesquioxane [J].

Dong, Fuping ;

Ha, Chang-Sik .

MACROMOLECULAR RESEARCH, 2011, 19 (02) :101-104

[7] Surface characterization of porous silicon after pore opening processes, inducing chemical modifications [J].

Errien, N. ;

Vellutini, L. ;

Louarn, G. ;

Froyer, G. .

APPLIED SURFACE SCIENCE, 2007, 253 (17) :7265-7271

[8] Super-liquid-repellent surfaces prepared by colloidal silica nanoparticles covered with fluoroalkyl groups [J].

Hikita, M ;

Tanaka, K ;

Nakamura, T ;

Kajiyama, T ;

Takahara, A .

LANGMUIR, 2005, 21 (16) :7299-7302

[9] Water and oil repellency of flexible silica-coated polymeric substrates [J].

Hsieh, Chien-Te ;

Cheng, Yu-Shun ;

Hsu, Shu-Min ;

Lin, Jia-Yi .

APPLIED SURFACE SCIENCE, 2010, 256 (16) :4867-4872

[10] Super water- and oil-repellencies from silica-based nanocoatings [J].

Hsieh, Chien-Te ;

Wu, Fang-Lin ;

Chen, Wei-Yu .

SURFACE & COATINGS TECHNOLOGY, 2009, 203 (22) :3377-3384

← 1 2 3 →