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 contribution | Core-Shell Copolymer as Highly Effective Additive for Epoxy Adhesives |
|---|---|
| Original language | Korean |
| Pages (from-to) | 757-763 |
| Number of pages | 7 |
| Journal | Polymer (Korea) |
| Volume | 45 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2021 Sept |
ASJC Scopus subject areas
- Chemical Engineering(all)
- Polymers and Plastics
- Materials Chemistry