Preparation of cationic latent initiators containing imidazole group and their effects on the properties of DGEBA epoxy resin

Eui Soung Jang, Sher Bahadar Khan, Jongchul Seo, Kalsoom Akhtar, Yoon Hee Nam, Kwang Won Seo, Haksoo Han

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The thermal cationic latent initiators, N-benzyl-3-methylimidazolium hexafluoroantimonate (BMH1) and N-butyl-3-methylimidazolium hexafluoroantimonate (BMH2) were synthesized and applied to the thermal cationic polymerization of diglycidyl ether of bisphenol A (DGEBA). The performance of BMH1 and BMH2 was examined by differential scanning calorimetry (DSC), which showed good thermal latent properties and excelled epoxy resin curing behavior. The morphology, thermal, mechanical, and water sorption properties of DGEBA resin cured by 1 wt% of BMH1 and BMH2 were measured by X-ray diffraction (XRD), scaming electron microscopy (SEM), thermogravimetric analysis (TGA), nanoindentation, and thin film diffusion analysis. The cured DGEBA/BMH1 system showed relatively higher thermal stability than the DGEBA/BMH2 system. The diffusion coefficient and water uptake were 14.2×10-9 cm2/s and 1.15 wt% for the DGEBA/BMH1 system and 11.5×10-9 cm2/s and 1.07 wt% for the DGEBA/BMH2 system, respectively. Therefore, DGEBA/BMH2 showed higher resistance to water sorption than DGEBA/BMH1. On the other hand, hardness and elastic modulus of DGEBA/BMH2 were higher than those of DGEBA/BMH1. This can be attributed to the difference in the end group of initiators as well as the degree of crosslinking in the cured resin network.

Original languageEnglish
Pages (from-to)989-997
Number of pages9
JournalMacromolecular Research
Volume19
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1

Fingerprint

Epoxy Resins
Epoxy resins
Ethers
Sorption
Water
Resins
2,2-bis(4-glycidyloxyphenyl)propane
imidazole
Cationic polymerization
Nanoindentation
Crosslinking
Electron microscopy
Curing
Thermogravimetric analysis
Differential scanning calorimetry
Thermodynamic stability
Elastic moduli
Hardness

All Science Journal Classification (ASJC) codes

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

Cite this

Jang, Eui Soung ; Khan, Sher Bahadar ; Seo, Jongchul ; Akhtar, Kalsoom ; Nam, Yoon Hee ; Seo, Kwang Won ; Han, Haksoo. / Preparation of cationic latent initiators containing imidazole group and their effects on the properties of DGEBA epoxy resin. In: Macromolecular Research. 2011 ; Vol. 19, No. 10. pp. 989-997.
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abstract = "The thermal cationic latent initiators, N-benzyl-3-methylimidazolium hexafluoroantimonate (BMH1) and N-butyl-3-methylimidazolium hexafluoroantimonate (BMH2) were synthesized and applied to the thermal cationic polymerization of diglycidyl ether of bisphenol A (DGEBA). The performance of BMH1 and BMH2 was examined by differential scanning calorimetry (DSC), which showed good thermal latent properties and excelled epoxy resin curing behavior. The morphology, thermal, mechanical, and water sorption properties of DGEBA resin cured by 1 wt{\%} of BMH1 and BMH2 were measured by X-ray diffraction (XRD), scaming electron microscopy (SEM), thermogravimetric analysis (TGA), nanoindentation, and thin film diffusion analysis. The cured DGEBA/BMH1 system showed relatively higher thermal stability than the DGEBA/BMH2 system. The diffusion coefficient and water uptake were 14.2×10-9 cm2/s and 1.15 wt{\%} for the DGEBA/BMH1 system and 11.5×10-9 cm2/s and 1.07 wt{\%} for the DGEBA/BMH2 system, respectively. Therefore, DGEBA/BMH2 showed higher resistance to water sorption than DGEBA/BMH1. On the other hand, hardness and elastic modulus of DGEBA/BMH2 were higher than those of DGEBA/BMH1. This can be attributed to the difference in the end group of initiators as well as the degree of crosslinking in the cured resin network.",
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Preparation of cationic latent initiators containing imidazole group and their effects on the properties of DGEBA epoxy resin. / Jang, Eui Soung; Khan, Sher Bahadar; Seo, Jongchul; Akhtar, Kalsoom; Nam, Yoon Hee; Seo, Kwang Won; Han, Haksoo.

In: Macromolecular Research, Vol. 19, No. 10, 01.10.2011, p. 989-997.

Research output: Contribution to journalArticle

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AU - Jang, Eui Soung

AU - Khan, Sher Bahadar

AU - Seo, Jongchul

AU - Akhtar, Kalsoom

AU - Nam, Yoon Hee

AU - Seo, Kwang Won

AU - Han, Haksoo

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N2 - The thermal cationic latent initiators, N-benzyl-3-methylimidazolium hexafluoroantimonate (BMH1) and N-butyl-3-methylimidazolium hexafluoroantimonate (BMH2) were synthesized and applied to the thermal cationic polymerization of diglycidyl ether of bisphenol A (DGEBA). The performance of BMH1 and BMH2 was examined by differential scanning calorimetry (DSC), which showed good thermal latent properties and excelled epoxy resin curing behavior. The morphology, thermal, mechanical, and water sorption properties of DGEBA resin cured by 1 wt% of BMH1 and BMH2 were measured by X-ray diffraction (XRD), scaming electron microscopy (SEM), thermogravimetric analysis (TGA), nanoindentation, and thin film diffusion analysis. The cured DGEBA/BMH1 system showed relatively higher thermal stability than the DGEBA/BMH2 system. The diffusion coefficient and water uptake were 14.2×10-9 cm2/s and 1.15 wt% for the DGEBA/BMH1 system and 11.5×10-9 cm2/s and 1.07 wt% for the DGEBA/BMH2 system, respectively. Therefore, DGEBA/BMH2 showed higher resistance to water sorption than DGEBA/BMH1. On the other hand, hardness and elastic modulus of DGEBA/BMH2 were higher than those of DGEBA/BMH1. This can be attributed to the difference in the end group of initiators as well as the degree of crosslinking in the cured resin network.

AB - The thermal cationic latent initiators, N-benzyl-3-methylimidazolium hexafluoroantimonate (BMH1) and N-butyl-3-methylimidazolium hexafluoroantimonate (BMH2) were synthesized and applied to the thermal cationic polymerization of diglycidyl ether of bisphenol A (DGEBA). The performance of BMH1 and BMH2 was examined by differential scanning calorimetry (DSC), which showed good thermal latent properties and excelled epoxy resin curing behavior. The morphology, thermal, mechanical, and water sorption properties of DGEBA resin cured by 1 wt% of BMH1 and BMH2 were measured by X-ray diffraction (XRD), scaming electron microscopy (SEM), thermogravimetric analysis (TGA), nanoindentation, and thin film diffusion analysis. The cured DGEBA/BMH1 system showed relatively higher thermal stability than the DGEBA/BMH2 system. The diffusion coefficient and water uptake were 14.2×10-9 cm2/s and 1.15 wt% for the DGEBA/BMH1 system and 11.5×10-9 cm2/s and 1.07 wt% for the DGEBA/BMH2 system, respectively. Therefore, DGEBA/BMH2 showed higher resistance to water sorption than DGEBA/BMH1. On the other hand, hardness and elastic modulus of DGEBA/BMH2 were higher than those of DGEBA/BMH1. This can be attributed to the difference in the end group of initiators as well as the degree of crosslinking in the cured resin network.

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