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Wang T, Canetta E, Weerakkody TG, et al. pH dependence of the properties of waterborne pressure-sensitive adhesives containing acrylic acid. ACS Appl Mater Interfaces. 2009;1(3):631-9doi: 10.1021/am800179y.
Wang, T., Canetta, E., Weerakkody, T. G., Keddie, J. L., & Rivas, U. (2009). pH dependence of the properties of waterborne pressure-sensitive adhesives containing acrylic acid. ACS applied materials & interfaces, 1(3), 631-9. https://doi.org/10.1021/am800179y
Wang, Tao, et al. "pH dependence of the properties of waterborne pressure-sensitive adhesives containing acrylic acid." ACS applied materials & interfaces vol. 1,3 (2009): 631-9. doi: https://doi.org/10.1021/am800179y
Wang T, Canetta E, Weerakkody TG, Keddie JL, Rivas U. pH dependence of the properties of waterborne pressure-sensitive adhesives containing acrylic acid. ACS Appl Mater Interfaces. 2009 Mar;1(3):631-9. doi: 10.1021/am800179y. PMID: 20355985.
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ACS Appl Mater Interfaces. 2009 Mar;1(3):631-9. doi: 10.1021/am800179y.

pH dependence of the properties of waterborne pressure-sensitive adhesives containing acrylic acid.

ACS applied materials & interfaces

Tao Wang, Elisabetta Canetta, Tecla G Weerakkody, Joseph L Keddie, Urko Rivas

Affiliations

  1. Department of Physics and Surrey Materials Institute, University of Surrey, Guildford, Surrey, United Kingdom.

PMID: 20355985 DOI: 10.1021/am800179y

Abstract

Polymer colloids are often copolymerized with acrylic acid monomers in order to impart colloidal stability. Here, the effects of the pH on the nanoscale and macroscopic adhesive properties of waterborne poly(butyl acrylate-co-acrylic acid) films are reported. In films cast from acidic colloidal dispersions, hydrogen bonding between carboxylic acid groups dominates the particle-particle interactions, whereas ionic dipolar interactions are dominant in films cast from basic dispersions. Force spectroscopy using an atomic force microscope and macroscale mechanical measurements show that latex films with hydrogen-bonding interactions have lower elastic moduli and are more deformable. They yield higher adhesion energies. On the other hand, in basic latex, ionic dipolar interactions increase the moduli of the dried films. These materials are stiffer and less deformable and, consequently, exhibit lower adhesion energies. The rate of water loss from acidic latex is slower, perhaps because of hydrogen bonding with the water. Therefore, although acid latex offers greater adhesion, there is a limitation in the film formation.

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