Superhydrophobic silica nanocomposite coating by a low-temperature process

Walid A. Daoud; John Haozhong Xin; Xiaoming Tao

doi:10.1111/j.1551-2916.2004.01782.x

Superhydrophobic silica nanocomposite coating by a low-temperature process

Walid A. Daoud, John Haozhong Xin, Xiaoming Tao

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

169 Citations (Scopus)

Abstract

We successfully prepared transparent and durable superhydrophobic silica-coating films on cotton substrates at low temperatures. The coatings were produced via cohydrolysis and polycondensation of a hexadecyltrimethoxysilane (HDTMS), tetraethoxyorthosilcate (TEOS), and 3-glycidyloxypropyltrimethoxysilane (GPTMS) mixture. The hydrophobic properties of the nanocomposite coatings were determined using contact-angle and water-gain measurements. The water contact angle for the coated substrates was 141°, whereas, before coating, the contact angle was 0° because of the superhydrophilic nature of cotton. The nanocomposite coating has new applications in daily used materials, especially those with low heat resistance, such as textiles and plastics, and as an environmentally friendly water-repellent substitute for fluorine compounds.

Original language	English
Pages (from-to)	1782-1784
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	87
Issue number	9
DOIs	https://doi.org/10.1111/j.1551-2916.2004.01782.x
Publication status	Published - 1 Jan 2004

ASJC Scopus subject areas

Ceramics and Composites
Geology
Geochemistry and Petrology
Materials Chemistry

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10.1111/j.1551-2916.2004.01782.x

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abstract = "We successfully prepared transparent and durable superhydrophobic silica-coating films on cotton substrates at low temperatures. The coatings were produced via cohydrolysis and polycondensation of a hexadecyltrimethoxysilane (HDTMS), tetraethoxyorthosilcate (TEOS), and 3-glycidyloxypropyltrimethoxysilane (GPTMS) mixture. The hydrophobic properties of the nanocomposite coatings were determined using contact-angle and water-gain measurements. The water contact angle for the coated substrates was 141°, whereas, before coating, the contact angle was 0° because of the superhydrophilic nature of cotton. The nanocomposite coating has new applications in daily used materials, especially those with low heat resistance, such as textiles and plastics, and as an environmentally friendly water-repellent substitute for fluorine compounds.",

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Superhydrophobic silica nanocomposite coating by a low-temperature process

Abstract

ASJC Scopus subject areas

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