Abstract
In this study, a novel biobased poly(ethylene brassylate)-poly(furfuryl glycidyl ether) copolymer (PEBF) copolymer was synthesized and applied as a structure-directing template to incorporate graphene and 1,1′-(methylenedi-4,1-phenylene)bismaleimide (BMI) to fabricate a series of self-healing organic/inorganic hybrid materials. This ternary material system provided different types of diene/dienophile pairs from the furan/maleimide, graphene/furan, and graphene/maleimide combinations to build a crosslinked network via multiple Diels–Alder (DA) reactions and synergistically co-assembled graphene sheets into the polymeric matrix with a uniform dispersibility. The PEBF/graphene/BMI hybrid system possessed an efficient self-repairability for healing structural defects and an electromagnetic interference shielding ability in the Ku-band frequency range. We believe that the development of the biobased self-healing hybrid system provides a promising direction for the creation of a new class of materials with the advantages of environmental friendliness as well as durability, and shows potential for use in advanced electromagnetic applications.
Highlights
During the past decade, the development of self-healing substances has become an important research field since these smart materials bear resemblance to the living organisms which possess an intrinsic capability to repair their architectural damage via an automatic process without additional intervention
To monitor the polymerization of the PEBF copolymer system, the molecular weight characterizations of the synthesized polymer sample were measured by gel permeation chromatography (GPC)
Beside the reactive furan-maleimide combination, graphene could serve as an effective DA crosslinking agent to build the DA crosslinked network
Summary
The development of self-healing substances has become an important research field since these smart materials bear resemblance to the living organisms which possess an intrinsic capability to repair their architectural damage via an automatic process without additional intervention. Nanoreservoirs [7,8] For these “autonomous” systems, the crack formation ruptures the microcontainers, releasing the liquid healing agents to fill the damage zones and restore the original loading capacity. Thermal heating, or magnetism could be applied for inducing stimuli-response to repeatedly break and heal the molecular structures of the materials to achieve the self-healing functionality
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