Superhydrophobicity and UV stability of polydimethylsiloxane/polytetrafluoroethylene (PDMS/PTFE) coatings

The incorporation of polytetrafluoroethylene (PTFE) nanoparticles in curable polydimethylsiloxane (PDMS) matrix allows the formulation of superhydrophobic films with contact angles of ~155-160deg. Evaluation of the effect of PTFE particle size on the superhydrophobicity was conducted by using a larg...

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Bibliographic Details
Published in2006 11th International Symposium on Advanced Packaging Materials: Processes, Properties and Interface pp. 98 - 103
Main Authors Yonghao Xiu, Lingbo Zhu, Hess, D., Wong, C.P.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2006
Subjects
Chemistry
Coatings
Conductive films
Fourier transforms
Infrared spectra
Microelectronics
Moisture
Nanoparticles
Spectroscopy
Stability
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Summary:The incorporation of polytetrafluoroethylene (PTFE) nanoparticles in curable polydimethylsiloxane (PDMS) matrix allows the formulation of superhydrophobic films with contact angles of ~155-160deg. Evaluation of the effect of PTFE particle size on the superhydrophobicity was conducted by using a larger particle size (2-5 mum); the resulting film yielded a contact angle of 140deg. However, after UV irradiation, the surface gradually lost superhydrophobicity. Changes in surface chemistry resulting from these processes were investigated using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). Applications for this superhydrophobic film include the coating of microelectronic devices for self-cleaning and moisture protection
ISBN:9781424402601
1424402603
ISSN:1550-5723
DOI:10.1109/ISAPM.2006.1666008