Improving the Hydrophobicity of ZnO by PTFE Incorporation

Joint Authors

Basu, Bharathi Bai J.
Rajam, K. S.
Srivastava, Meenu

Source

Journal of Nanotechnology

Issue

Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-6, 6 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2011-06-26

Country of Publication

Egypt

No. of Pages

6

Main Subjects

Engineering Sciences and Information Technology
Chemistry

Abstract EN

The objective of the present study is to obtain a zinc oxide- (ZnO-) based superhydrophobic surface in a simple and cost-effective manner.

Chemical immersion deposition being simple and economical has been adopted to develop modified ZnO coating on glass substrate.

Several modifications of ZnO like treatment with alkanoic acid (stearic acid) and fluoroalkylsilane to tune the surface wettability (hydrophobicity) were attempted.

The effect of thermal treatment on the hydrophobic performance was also studied.

It was observed that thermal treatment at 70°C for 16 hrs followed by immersion in stearic acid resulted in high water contact angle (WCA), that is, a superhydrophobic surface.

Thus, a modified ZnO superhydrophobic surface involves the consumption of large amount of electrical energy and time.

Hence, the alternate involved the incorporation of low surface energy fluoropolymer polytetrafluoroethylene (PTFE) in the ZnO coating.

The immersion deposited ZnO-PTFE composite coating on modification with either stearic acid or fluoroalkylsilane resulted in a better superhydrophobic surface.

The coatings were characterized using Scanning Electron Microscope (SEM) for the surface morphology.

It was found that microstructure of the coating was influenced by the additives employed.

A flower-like morphology comprising of needle-like structure arranged in a radial manner was exhibited by the superhydrophobic coating.

American Psychological Association (APA)

Srivastava, Meenu& Basu, Bharathi Bai J.& Rajam, K. S.. 2011. Improving the Hydrophobicity of ZnO by PTFE Incorporation. Journal of Nanotechnology،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-468562

Modern Language Association (MLA)

Srivastava, Meenu…[et al.]. Improving the Hydrophobicity of ZnO by PTFE Incorporation. Journal of Nanotechnology No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-468562

American Medical Association (AMA)

Srivastava, Meenu& Basu, Bharathi Bai J.& Rajam, K. S.. Improving the Hydrophobicity of ZnO by PTFE Incorporation. Journal of Nanotechnology. 2011. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-468562

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-468562