Polymer–graphene composites by the photocuring of a system containing benzophenone macromer

Main Article Content

Florentina Jitaru
Andreea L Chibac
George Epurescu
Ioana Ion
Tinca Buruiana

Abstract

Formulations incorporating benzophenone–oligodimethacrylate
(BP–DMA) and graphene structures, i.e., graphene oxide (GO) and reduced graphene oxide (RGO), were exposed to UV–Vis irradiation or a femtosecond laser beam to achieve hybrid composites. All structures were characterized through various methods, including 1H-NMR and FTIR spectroscopies, optical microscopy, TEM, ESEM/EDAX analysis and DSC/XRD techniques. The photopoly­me­ri­za­ti­on of BP–DMA in the monomer compositions with and without GO or RGO was investigated by photo-DSC and FTIR methods to det­ermine the kinetic parameters of the polymeri­zation. The photopolymerization experiments revealed a good photoreactivity of the monomers (degree of con­version: 65–77 %) after 1 min exposure to UV–Vis irradiation and the addition of graphene (up to 0.5 %), whereas the polymerization rate varied between 0.14 and 0.1 s-1. Moreover, two-photon photopolymerization of the formulations in the presen­ce/absence of GO or RGO nanosheets (0.1 wt. %) generated 2D microstructures by the direct laser writing procedure. Furthermore, the morpho­logy and the properties of composites materials were analyzed.

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How to Cite
[1]
F. Jitaru, A. L. Chibac, G. Epurescu, I. Ion, and T. Buruiana, “Polymer–graphene composites by the photocuring of a system containing benzophenone macromer”, J. Serb. Chem. Soc., vol. 81, no. 9, pp. 1055–1068, Oct. 2016.
Section
Polymers

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