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Polymers 2018, 10(9), 941; https://doi.org/10.3390/polym10090941

Advanced Polybenzoxazine Structures Based on Modified Reduced Graphene Oxide

1
Advanced Polymer Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania
2
Petru Poni Institute of Macromolecular Chemistry, 700487 Iasi, Romania
3
Department of Oxide Materials Science and Engineering, University Politehnica of Bucharest, 011061 Bucharest, Romania
4
Academy of Romanian Scientists, 050094 Bucharest, Romania
*
Author to whom correspondence should be addressed.
Received: 20 July 2018 / Revised: 8 August 2018 / Accepted: 19 August 2018 / Published: 24 August 2018
(This article belongs to the Special Issue Hybrid Materials Based on Thermosets)
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Abstract

Two new polybenzoxazine products based on a reduced graphene oxide (rGO) were synthesized. The synthesis process started with an rGO with amino functionalities. Benzoxazine structures were synthesized with oxazine rings attached to the surface of rGO and were fully characterized by FT-IR, 1H–NMR, XPS and XRD. The presence of polybenzoxazine chains was pointed out by 1H–NMR and it correlated with XRD data which show a partial exfoliation of the graphene oxide layers. The degree of polymerization plays a significant role against the exfoliation process. A higher yield of the ring-opening process for benzoxazine rings leads to a low degree of exfoliation, as the inner covalent bonds within the polybenzoxazine chains keep the graphene oxide sheets together. View Full-Text
Keywords: modified graphene oxide; polybenzoxazine; exfoliated graphene sheets modified graphene oxide; polybenzoxazine; exfoliated graphene sheets
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bîru, E.I.; Gârea, S.A.; Nicolescu, A.; Vasile, E.; Iovu, H. Advanced Polybenzoxazine Structures Based on Modified Reduced Graphene Oxide. Polymers 2018, 10, 941.

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