Effects of methylation and neutralization of carboxylated poly(n-butyl acrylate) on the interfacial and bulk contributions to adhesion

Dongchan Ahn, Kenneth R. Shull*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

The relationship between the energy release rate (or adhesion energy ) and the crack velocity has been measured for a variety of cross-linked elastomers based on carboxylated poly(n-butyl acrylate). Methylation of the carboxyl groups decreased adhesion energies to the glassy polymer substrates used in these experiments, and neutralization of the carboxyl groups increased the adhesion energy to these substrates. The primary effect of methylation or neutralization was to change the velocity dependence of the adhesion energy. These changes were consistent with changes in the measured relaxation times of un-cross-linked carboxylated, methylated and neutralized polymers. Effects on the critical energy release rate required for measurable crack motions were consistent with a contact charging mechanism, involving transfer of a proton for the carboxylated elastomers, and transfer of a sodium ion for the neutralized polymers.

Original languageEnglish (US)
Pages (from-to)3637-3645
Number of pages9
JournalLangmuir
Volume14
Issue number13
StatePublished - Jun 23 1998

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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