01.06.2015 | Original Paper | Ausgabe 11/2015
In situ random co-polycondensation for preparation of reduced graphene oxide/polyimide nanocomposites with amino-modified and chemically reduced graphene oxide
- Zeitschrift:
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Journal of Materials Science
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Ausgabe 11/2015
- Autoren:
- Wen-Qiu Chen, Quan-Tao Li, Peng-Hui Li, Quan-Yuan Zhang, Zu-Shun Xu, Paul K. Chu, Xian-Bao Wang, Chang-Feng Yi
Abstract
Reduced graphene oxide/polyimide (rGO/PI) nanocomposites are prepared via in situ random co-polycondensation of amino-modified and chemically reduced graphene oxide (rGO-NH2) with commercial diamine and dianhydrides. The chemical modification and reduction of graphene oxide (GO) endows rGO-NH2 with good solubility in organic solvents to prepare rGO/PI nanocomposites with high filler contents. rGO-NH2 is further used as a functional co-monomer to participate the polymerization of PI with full compatibility of the guest and host in molecular level. With the addition of rGO-NH2 at 2 wt% content, the thermal, mechanical properties, and hydrophobicities of rGO/PI nanocomposites are significantly enhanced with various indicators achieving or approaching the optimum. The positive or negative impacts of rGO-NH2 with various contents to the properties of the obtained nanocomposites are also illustrated incidentally from micromorphology. This effective approach provides a possibility for developing high-performance PI composites based on graphene for advanced engineering or functional materials.