Microwave‐Assisted Reversible Coordination‐Mediated Polymerization for Self‐Healing Hybrid Materials: RGO@PDA Simultaneous as Catalyst and Nanocomposites in One‐Pot

Abstract

In this article, polydopamine (PDA) is efficiently adhered on the surface of graphene oxide (GO) by mussel‐inspired chemistry. The obtained reduced GO/PDA (RGO@PDA) nanocomposites are used for catalyzing reversible coordination‐mediated polymerization under microwave radiation. Well‐defined and iodine‐terminated polyacrylonitrile‐co‐poly(n‐butyl acrylate) (PAN‐co‐PnBA) is successfully fabricated by using RGO@PDA nanocomposites as catalysts. Importantly, green and novel strategy of PAN‐co‐PnBA‐type self‐healing nanocomposite materials is further fabricated with RGO@PDA as additive after polymerization as catalyst in one‐pot. As a reinforcement agent, RGO@PDA can also improve the mechanical and self‐healing properties of hybrid materials, which opens up a novel and green methodology for the preparation of self‐healing hybrid materials.

Magnetically Aligned Fe3O4 Nanowires-Reduced Graphene Oxide for Gas Barrier, Microwave Absorption, and EMI Shielding

“…The finding implied that the growth of Fe 3 O 4 NWs on GO sheets was strongly affected by the content of DA in the reaction solution. This was most probably due to the content-induced changing of the DA state, since the mild oxidative self-polymerization of DA at room temperature could be readily achieved as reported in the literature − and our previous works. , And the self-polymerization of DA could also result in the reduction and functionalization of GO simultaneously. However, it should be noted that such self-polymerization of DA was very sensitive to the pH value of the reaction system, which normally took place only at a weak alkaline condition (pH ≃ 8.5) in the ordinary system.…”

Study of the dielectric heating of graphite oxide and its effect on the microwave‐assisted synthesis of Nylon‐6/graphite oxide polymeric hybrid nanocomposites

“…18,19 During graphenebased composites preparation, a synergistic effect is generated because the monomer and graphite oxide (GrO) absorb microwave energy, 20,21 leading to polymerization and GrO hybridization during the first 60 s of the reaction. 22,23 Moreover, microwave enables to create HPNCs with well-dispersed GO and high heating rates (HRs), 24 and activate the reactivity of the functional groups distributed in monomers/polymers and GrO films (GrOF), allowing them to react with each other. [25][26][27][28] Even GrO undergoes simultaneous reduction, exfoliation, and hybridization processes due to the dielectric heating (DH) phenomenon, which largely depends on several physicochemical parameters still unknown.…”