Compositional Effects on the Adhesion of Acrylic Pressure Sensitive Adhesives

The contact mechanics-based Johnson−Kendall−Roberts technique has been used to study the adhesion of cross-linked 2-ethylhexyl acrylate-co-acrylic acid (2EHA-co-AA) elastomers as models of pressure sensitive adhesives (m-PSA). We have addressed the effect of m-PSA composition on intrinsic solid surf...

Full description

Saved in:
Bibliographic Details
Published in:Langmuir 2000-02, Vol.16 (4), p.1816-1824
Main Authors: Falsafi, Afshin, Tirrell, Matthew, Pocius, Alphonsus V
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The contact mechanics-based Johnson−Kendall−Roberts technique has been used to study the adhesion of cross-linked 2-ethylhexyl acrylate-co-acrylic acid (2EHA-co-AA) elastomers as models of pressure sensitive adhesives (m-PSA). We have addressed the effect of m-PSA composition on intrinsic solid surface energetics and on the mechanical performance of m-PSA. The measured surface energies of the m-PSA were all approximately 30 mJ m-2, indicating surfaces dominated by methylene groups. The extent of adhesion hysteresis for the m-PSA used in our measurements was not a strong function of acrylic acid content implying that the main mechanism contributing to the adhesion of practical un-cross-linked or lightly cross-linked PSA is the viscoelastic dissipation. Several technical and physical issues concerning contact mechanical measurement of adhesion and the observed rate-dependent patterns of adhesion have been addressed.
ISSN:0743-7463
1520-5827
DOI:10.1021/la990345z