Energy Decomposition Analysis of the Adhesive Interaction between an Epoxy Resin Layer and a Silica Surface

Chisa Higuchi, Kazunari Yoshizawa

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

We investigate the adhesive interaction energy (ΔEint) between an epoxy resin and a silica surface using pair interaction energy decomposition analysis (PIEDA), which decomposes ΔEint into four components: electrostatic (ΔEes), exchange repulsion (ΔEex), charge-transfer (ΔEct), and dispersion (ΔEdisp) energies based on quantum chemistry. Our previous study with PIEDA showed that synergistic effects of ΔEes and ΔEdisp are critical at the interface between an epoxy resin fragment and a hydrophilic surface. The present study is designed to show in detail that the synergistic effects are significant at the interface between an epoxy layer model consisting of 20 epoxy monomers and a hydrophilic silica surface. The ratio of the dispersion energies to the total interaction energies of the layer model shows good agreement with experimental values, that is, the dispersion ratio of the work of adhesion (Wad). The 20 epoxy molecules in the layer model are investigated individually to closely correlate the four decomposed energies with their structural features. Our energy-decomposition analyses show that H-bonding and OH-πinteractions play important roles at the interface between an epoxy resin and a silica surface. PIEDA calculations for the epoxy layer model also show that the region 3.6 Å from the silica surface accounts for more than 99% of the total interaction energies.

本文言語英語
ページ(範囲)8417-8425
ページ数9
ジャーナルLangmuir
37
28
DOI
出版ステータス出版済み - 7 20 2021

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

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