Adhesive failure of model acrylic pressure sensitive adhesives

Peter L. Drzal, Kenneth R. Shull*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

An axisymmetric adhesion apparatus was used to characterize the adhesive and viscoelastic properties of acrylic block copolymer layers that behave as model pressure sensitive adhesives. The mechanisms of deformation were summarized and related to the structure and linear viscoelastic response of each model adhesive. In cases where the area between the adhesive layer and adhering surface remained circular and shrunk uniformly during detachment, the adhesive failure criterion can be quantified and compared to predictions from linear elastic fracture mechanics. The nature of adhesive failure can not be reconciled with these traditional, low-strain approaches, but is consistent with models of large strain elasticity, provided that the finite thickness of the adhesive layer is taken into account. A dimensionless ratio involving the adhesive strength, elastic modulus and adhesive layer thickness can be used to define the regime in which the adhesive failure criterion can be quantified with linear elastic fracture mechanics.

Original languageEnglish (US)
Pages (from-to)397-415
Number of pages19
JournalJournal of Adhesion
Volume81
Issue number3-4
DOIs
StatePublished - Mar 1 2005

Keywords

  • Acrylic block copolymers
  • Adhesive failure criterion
  • Axisymmetric adhesion test
  • Large strain elasticity
  • Pressure sensitive adhesives
  • Probe tack test

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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