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Infrared induced repeatable self-healing and removability of mechanically enhanced graphene-epoxy flexible materials.

ABSTRACT: A repeatable self-healing epoxy composite mechanically enhanced by graphene nanosheets (GNS) was prepared from an epoxy monomer with Diels-Alder (DA) bonds, octanediol glycidyl ether (OGE) and polyether amine (D230). The GNS/epoxy composites, with a maximum tensile modulus of 14.52 ± 0.45 MPa and elongation at break more than 100%, could be healed several times under Infrared (IR) light with the healing efficiency as high as 90% through the molecule chain mobility and the rebonding of reversible DA bonds between furan and maleimide. Also, they displayed excellent recyclable ability by transforming into a soluble polymer, which offers a wide range of possibilities to produce epoxy flexible materials with healing and removable abilities.

SUBMITTER: Guo Y

PROVIDER: S-EPMC9064049 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Infrared induced repeatable self-healing and removability of mechanically enhanced graphene-epoxy flexible materials.

Guo Yakun Y Zou Dongli D Zhu Wanqiu W Yang Xiaojiao X Zhao Pengxiang P Chen Changan C Shuai Maobing M

RSC advances 20190507 25

A repeatable self-healing epoxy composite mechanically enhanced by graphene nanosheets (GNS) was prepared from an epoxy monomer with Diels-Alder (DA) bonds, octanediol glycidyl ether (OGE) and polyether amine (D230). The GNS/epoxy composites, with a maximum tensile modulus of 14.52 ± 0.45 MPa and elongation at break more than 100%, could be healed several times under Infrared (IR) light with the healing efficiency as high as 90% through the molecule chain mobility and the rebonding of reversible ...[more]

PMID: 35519330

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