Surface characteristics of coated polyester fabric with reduced graphene oxide and polypyrrole

摘要

In this study, the influence of coating polyethylene terephthalate (PET) fabric with reduced graphene oxide (rGO) and polypyrrole (PPy), individually or in combination (rGO-PPy), on surface chemistry and roughness (focusing on wetting behavior), were analyzed systematically. Characterization was carried out by observing the topography (atomic force microscopy - AFM) and stating surface analysis (X-ray photoelectron spectroscopy - XPS), contact angles (goniometry), water shedding angles, and surface energy values of the samples. The results showed that the contact angles of pristine (uncoated), GO and rGO-PPy coated samples were 0 degrees while it was 92 degrees, 123 degrees and 151 degrees for hot pressed (2nd pristine sample), rGO and PPy samples, respectively. A zero contact angle for PET sample was due to its wicking ability. Results were interpreted with Young, Wenzel and Cassie Baxter equations. It was found that PPy coated samples were consistent with Cassie-Baxter equation, while rGO placed between Wenzel and Cassie-Baxter wetting models. (C) 2016 Elsevier B.V. All rights reserved.