Superhydrophobic materials have generated worldwide interest due to their wonderful array of properties and
applications. In this paper, a combination of micro- and nano-scale structure was fabricated on a polypropylene
(PP) nonwoven fabric through cosputtering of polytetrafluoroethylene (PTFE) and TiO2. The effects of PTFE
and TiO2 sputter coating on surface morphology and chemical properties were characterized using atomic force
microscopy (AFM), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The
wettability of the fabric was characterized through measuring the surface contact angle by a dynamic sessile
analysis (DSA) technique. The contact angle of the coated fabric showed significant superhydrophobic property.
The experimental results also revealed that contact angle of the coated fabric could decreased from 151.2 to
31.5 under the irradiation of UV light.