Interfacial energy and adhesion between acrylic pressure sensitive adhesives and release coatings

Li Hua Li; Chris Macosko; Gary L. Korba; Alphonsus V. Pocius; Matthew Tirrell

doi:10.1080/00218460108030734

Interfacial energy and adhesion between acrylic pressure sensitive adhesives and release coatings

Li Hua Li, Chris Macosko, Gary L. Korba, Alphonsus V. Pocius, Matthew Tirrell

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The interfacial adhesive behavior between acrylic pressure sensitive adhesive-like networks (PSA-LNs) and poly(vinyl N-alkyl carbamate) release coatings was studied using a contact mechanical method and peel tests. Surface energy and interracial energy were directly measured in JKR tests using a novel sample construction. The surface energy of the poly(vinyl N-alkyl carbamates) was found to be around 20 mJ/m². Interfacial energies between PSA-LNs and the release coatings were found to be quite high - between 7 and 24 mJ/m². Changes in adhesion dynamics were governed by acid-base interactions between the carbamate in the release coating and the acid groups in the PSA-LN. The length of the alkyl chain in the release coating moderated this effect. We also found a correlation between fundamental adhesion energy and peel strength. Examination of this phenomenon provides a basis for understanding the poor storage stability of PSA tapes made using alkyl carbamates and acid-containing PSAs.

Original language	English (US)
Pages (from-to)	95-123
Number of pages	29
Journal	Journal of Adhesion
Volume	77
Issue number	2
DOIs	https://doi.org/10.1080/00218460108030734
State	Published - 2001

Bibliographical note

Funding Information:
We gratefully acknowledge the financial support provided by 3M Company and the NSF-MRSEC DMR-9809364 at the University of Minnesota. We thank Dr. D. J. Kinning of 3M for providing the release materials. We also thank Prof. W. W. Gerberich of the University of Minnesota for stimulating discussions.

Keywords

Interfacial energy
Peel adhesion
Pressure sensitive adhesives
Release coating

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title = "Interfacial energy and adhesion between acrylic pressure sensitive adhesives and release coatings",

abstract = "The interfacial adhesive behavior between acrylic pressure sensitive adhesive-like networks (PSA-LNs) and poly(vinyl N-alkyl carbamate) release coatings was studied using a contact mechanical method and peel tests. Surface energy and interracial energy were directly measured in JKR tests using a novel sample construction. The surface energy of the poly(vinyl N-alkyl carbamates) was found to be around 20 mJ/m2. Interfacial energies between PSA-LNs and the release coatings were found to be quite high - between 7 and 24 mJ/m2. Changes in adhesion dynamics were governed by acid-base interactions between the carbamate in the release coating and the acid groups in the PSA-LN. The length of the alkyl chain in the release coating moderated this effect. We also found a correlation between fundamental adhesion energy and peel strength. Examination of this phenomenon provides a basis for understanding the poor storage stability of PSA tapes made using alkyl carbamates and acid-containing PSAs.",

keywords = "Interfacial energy, Peel adhesion, Pressure sensitive adhesives, Release coating",

author = "Li, {Li Hua} and Chris Macosko and Korba, {Gary L.} and Pocius, {Alphonsus V.} and Matthew Tirrell",

note = "Funding Information: We gratefully acknowledge the financial support provided by 3M Company and the NSF-MRSEC DMR-9809364 at the University of Minnesota. We thank Dr. D. J. Kinning of 3M for providing the release materials. We also thank Prof. W. W. Gerberich of the University of Minnesota for stimulating discussions.",

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doi = "10.1080/00218460108030734",

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AU - Li, Li Hua

AU - Macosko, Chris

AU - Korba, Gary L.

AU - Pocius, Alphonsus V.

AU - Tirrell, Matthew

N1 - Funding Information: We gratefully acknowledge the financial support provided by 3M Company and the NSF-MRSEC DMR-9809364 at the University of Minnesota. We thank Dr. D. J. Kinning of 3M for providing the release materials. We also thank Prof. W. W. Gerberich of the University of Minnesota for stimulating discussions.

PY - 2001

Y1 - 2001

N2 - The interfacial adhesive behavior between acrylic pressure sensitive adhesive-like networks (PSA-LNs) and poly(vinyl N-alkyl carbamate) release coatings was studied using a contact mechanical method and peel tests. Surface energy and interracial energy were directly measured in JKR tests using a novel sample construction. The surface energy of the poly(vinyl N-alkyl carbamates) was found to be around 20 mJ/m2. Interfacial energies between PSA-LNs and the release coatings were found to be quite high - between 7 and 24 mJ/m2. Changes in adhesion dynamics were governed by acid-base interactions between the carbamate in the release coating and the acid groups in the PSA-LN. The length of the alkyl chain in the release coating moderated this effect. We also found a correlation between fundamental adhesion energy and peel strength. Examination of this phenomenon provides a basis for understanding the poor storage stability of PSA tapes made using alkyl carbamates and acid-containing PSAs.

AB - The interfacial adhesive behavior between acrylic pressure sensitive adhesive-like networks (PSA-LNs) and poly(vinyl N-alkyl carbamate) release coatings was studied using a contact mechanical method and peel tests. Surface energy and interracial energy were directly measured in JKR tests using a novel sample construction. The surface energy of the poly(vinyl N-alkyl carbamates) was found to be around 20 mJ/m2. Interfacial energies between PSA-LNs and the release coatings were found to be quite high - between 7 and 24 mJ/m2. Changes in adhesion dynamics were governed by acid-base interactions between the carbamate in the release coating and the acid groups in the PSA-LN. The length of the alkyl chain in the release coating moderated this effect. We also found a correlation between fundamental adhesion energy and peel strength. Examination of this phenomenon provides a basis for understanding the poor storage stability of PSA tapes made using alkyl carbamates and acid-containing PSAs.

KW - Interfacial energy

KW - Peel adhesion

KW - Pressure sensitive adhesives

KW - Release coating

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Interfacial energy and adhesion between acrylic pressure sensitive adhesives and release coatings

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