Solvent effects on the fracture of chemically crosslinked gels

Yoshimi Tanaka, Risa Shimazaki, Satoshi Yano, Gaku Yoshida, Tetsuo Yamaguchi

研究成果: Contribution to journalArticle

7 引用 (Scopus)

抜粋

We have investigated how the fracture behavior of a polyacrylamide hydrogel is affected by different types of solvents poured into its crack tips. We obtained the following results: first, when water (good solvent or reaction solvent for the polyacrylamide gel) is poured, the fracture energy Γ becomes smaller than that measured in air for small crack velocities V (V ≤ 10 mm s-1). Second, when good solvents other than water are poured, Γ is enhanced for a large V region (5 ≤ V ≤ 60 mm s-1), but this effect is not observed for smaller V; Γ(V) in good solvents converges to that in water as V → 0. Third, when ethanol (poor solvent for polyacrylamide) is poured, stick-slip-like crack propagation appears in the entire V range, and Γ calculated from the time-average of the oscillating tearing forces is larger than that in air or in other solvents. We discuss the results on the basis of diffusion dynamics around the crack tips of the gel.

元の言語英語
ページ(範囲)8135-8142
ページ数8
ジャーナルSoft Matter
12
発行部数39
DOI
出版物ステータス出版済み - 1 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

フィンガープリント Solvent effects on the fracture of chemically crosslinked gels' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用