코어쉘 공중합체 첨가제 도입을 통한 에폭시 접착제 물성 향상

Translated title of the contribution: Core-Shell Copolymer as Highly Effective Additive for Epoxy Adhesives

Junsoo Moon, Yoon Huh, Youngson Choe, Joona Bang

Research output: Contribution to journalArticlepeer-review

Abstract

A core-shell structured copolymer (CSP) that consists of a rubbery core and an epoxy-miscible shell was synthesized and used as additives in the epoxy resin. The poly(butylacrylate) (PBA) core functions as a rubbery particle that induces the nanocavitation effect, while the poly(ethylene glycol) (PEG) shell allows uniform dispersion within the epoxy resin due to its miscibility with epoxy. A divinylbenzene (DVB) crosslinker was used to bind the core and to synthesize a stable CSP. The mechanical properties of the additive-modified epoxy resin were investigated by measuring the adhesion strength using a universal testing machine. When using CSP as additives in the epoxy resin, the adhesion strength was increased by 160%, while the linear copolymer (LP) only showed a 130% increase. The morphology of the CSP-modified epoxy and the fracture surface morphologies confirm the role of the nanocavitation effect and the void formation in improving the mechanical properties of the CSP-modified epoxy resins.

Translated title of the contributionCore-Shell Copolymer as Highly Effective Additive for Epoxy Adhesives
Original languageKorean
Pages (from-to)757-763
Number of pages7
JournalPolymer (Korea)
Volume45
Issue number5
DOIs
Publication statusPublished - 2021 Sep

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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