Development of a supramolecular accelerator simultaneously to increase the cross-linking density and ductility of an epoxy resin

Jiae Seo, Nobuhiko Yui, Ji-Hun Seo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The development of a novel accelerator capable of simultaneously enhancing the cross-linking density and ductility of an epoxy resin without sacrificing the reaction rate is reported. The basic concept comprises the synthesis of a tertiary amine-functionalized polyrotaxane (PRX_NR1) accelerator: a molecular necklace structure that induces a high cross-linking density as well as active molecular movement. Fourier transform infrared spectroscopy and differential scanning calorimetry measurements confirmed that the PRX_NR1-containing epoxy resin afforded a high reaction rate. Furthermore, the cross-linking density and mechanical properties of the epoxy resin were confirmed by dynamic mechanical analysis and tensile testing. Consequently, the PRX_NR1-containing epoxy resin greatly increased the cross-linking density, thereby resulting in an increase in tensile strength and glass transition temperature. Interestingly, the epoxy resin exhibited a simultaneous increase in ductility which is important to avoid brittle fracture (low toughness) of the epoxy resins. These results indicate that the proposed molecular necklace-like supramolecular PRX_NR1 accelerator is highly effective to overcome the traditional drawbacks of an epoxy resin that pose significant problems in the industrial field.

Original languageEnglish
Pages (from-to)303-311
Number of pages9
JournalChemical Engineering Journal
Volume356
DOIs
Publication statusPublished - 2019 Jan 15

Fingerprint

Epoxy Resins
ductility
Epoxy resins
Particle accelerators
Ductility
resin
reaction rate
Reaction rates
brittle fracture
Tensile testing
calorimetry
Brittle fracture
Dynamic mechanical analysis
FTIR spectroscopy
tensile strength
Molecular structure
Toughness
Amines
Fourier transform infrared spectroscopy
Differential scanning calorimetry

Keywords

  • Accelerator
  • Cross-linker
  • Ductility
  • Epoxy resin
  • Polyrotaxane

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Development of a supramolecular accelerator simultaneously to increase the cross-linking density and ductility of an epoxy resin. / Seo, Jiae; Yui, Nobuhiko; Seo, Ji-Hun.

In: Chemical Engineering Journal, Vol. 356, 15.01.2019, p. 303-311.

Research output: Contribution to journalArticle

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