Preparation and Properties of TPU/Reduced Graphene Oxide-poly(p-phenylenediamine) Composite Films

doi:10.19491/j.issn.1001-9278.2018.09.010

Abstract

Abstract: Graphene oxide (GO) was prepared by a Hummer's method, and then the in-situ polymerization of polyparaphenylene diamine (PPDA) was performed on the surface of GO. The resulting GO was further reduced by hydrazine hydrate to obtain a RGOPPDA hybrid. Furthermore, the TPU/RGO-PPDA composite films were prepared by a solution coating method, and their structure and performance were characterized by FTIR, XRD, SEM, TEM, XPS, oxygen permeation meter and high resistance meter. The results indicated that the in-situ polymerization of PPDA onto GO significantly improved the lipophilicity of GO, which favors the dispersion of GO in DMF. With this reason, the RGO-PPDA achieved a uniform dispersion in the TPU matrix. When 0.98 wt % of RGO-PPDA was added, the oxygen transmission rate of the composite film decreased by 73.28 % compared to pure TPU film, and its electrical conductivity increased by a factor of 8, indicating good barrier and antistatic properties.

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