Article history: In this paper, poly(vinyl alcohol) (PVA)/poly(dopamine)-functionalized graphene oxide (PGO) nanocom- Received 6 June 2017 posites with high performance were prepared by an environment-friendly and facile strategy. GO was Received in revised form 4 July 2017 ﬁrstly functionalized and simultaneously reduced by poly(dopamine) to yield PGO. Then it was mixed Accepted 5 July 2017 with PVA in aqueous solution to make PVA/PGO nanocomposites. Transmission electron microscopy Available online 10 August 2017 revealed that the PGO nanosheets are well dispersed and randomly oriented throughout the PVA matrix. At the same time, the thermal properties and water barrier properties of the PVA/PGO nanocompos- Keywords: ites have been strikingly enhanced by the incorporation of PGO. The degradation temperature of the Poly(vinyl alcohol) nanocomposites is more than 30 C higher than that of pure PVA by the addition of 0.7 wt% PGO, which Graphene oxide shows good thermal stability. The water vapor permeability of the nanocomposites also decreases Poly(dopamine) −12 2 to 0.71 × 10 g cm/(cm s Pa), corresponding to 80% reduction than that of pure PVA. Moreover, the Thermal properties Water barrier properties PVA/PGO nanocomposites also present enhanced conductive properties. The PVA/PGO nanocompos- Electrical conductivity ites with such outstanding properties
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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