Fundamentals of adhesion failure for a model adhesive (PMMA/Glass) joint in humid environments

Kar Tean Tan; C. C. White; D. L. Hunston; C. Clerici; K. L. Steffens; J. Goldman; Bryan Vogt

doi:10.1080/00218460802004428

Fundamentals of adhesion failure for a model adhesive (PMMA/Glass) joint in humid environments

Kar Tean Tan, C. C. White, D. L. Hunston, C. Clerici, K. L. Steffens, J. Goldman, Bryan Vogt

Chemical Engineering

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

20 Scopus citations

Abstract

The origins for the abrupt adhesion loss at a critical relative humidity (RH) for polymeric adhesives bonded to inorganic surfaces were explored using a poly(methyl methacrylate) (PMMA) film on silicon oxide as a model system. The interfacial and bulk water concentrations within the polymer film were quantified as a function of D₂O partial pressure using neutron reflectivity. The adhesive fracture energies of these PMMA/SiO₂ interfaces at the same conditions were determined using a shaft-loaded blister test. Discontinuities in the adhesive fracture energy, bulk moisture solubility, and the width of the interfacial moisture excess near the interface were observed at the critical RH. A mechanism based on the coupling of bulk swelling-induced stresses with the decreased cohesive strength due to moisture accumulation at the interface is proposed and is consistent with all experimental observations.

Original language	English (US)
Pages (from-to)	339-367
Number of pages	29
Journal	Journal of Adhesion
Volume	84
Issue number	4
DOIs	https://doi.org/10.1080/00218460802004428
State	Published - Apr 1 2008

All Science Journal Classification (ASJC) codes

General Chemistry
Mechanics of Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1080/00218460802004428

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title = "Fundamentals of adhesion failure for a model adhesive (PMMA/Glass) joint in humid environments",

abstract = "The origins for the abrupt adhesion loss at a critical relative humidity (RH) for polymeric adhesives bonded to inorganic surfaces were explored using a poly(methyl methacrylate) (PMMA) film on silicon oxide as a model system. The interfacial and bulk water concentrations within the polymer film were quantified as a function of D2O partial pressure using neutron reflectivity. The adhesive fracture energies of these PMMA/SiO2 interfaces at the same conditions were determined using a shaft-loaded blister test. Discontinuities in the adhesive fracture energy, bulk moisture solubility, and the width of the interfacial moisture excess near the interface were observed at the critical RH. A mechanism based on the coupling of bulk swelling-induced stresses with the decreased cohesive strength due to moisture accumulation at the interface is proposed and is consistent with all experimental observations.",

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AU - Tan, Kar Tean

AU - White, C. C.

AU - Hunston, D. L.

AU - Clerici, C.

AU - Steffens, K. L.

AU - Goldman, J.

AU - Vogt, Bryan

PY - 2008/4/1

Y1 - 2008/4/1

N2 - The origins for the abrupt adhesion loss at a critical relative humidity (RH) for polymeric adhesives bonded to inorganic surfaces were explored using a poly(methyl methacrylate) (PMMA) film on silicon oxide as a model system. The interfacial and bulk water concentrations within the polymer film were quantified as a function of D2O partial pressure using neutron reflectivity. The adhesive fracture energies of these PMMA/SiO2 interfaces at the same conditions were determined using a shaft-loaded blister test. Discontinuities in the adhesive fracture energy, bulk moisture solubility, and the width of the interfacial moisture excess near the interface were observed at the critical RH. A mechanism based on the coupling of bulk swelling-induced stresses with the decreased cohesive strength due to moisture accumulation at the interface is proposed and is consistent with all experimental observations.

AB - The origins for the abrupt adhesion loss at a critical relative humidity (RH) for polymeric adhesives bonded to inorganic surfaces were explored using a poly(methyl methacrylate) (PMMA) film on silicon oxide as a model system. The interfacial and bulk water concentrations within the polymer film were quantified as a function of D2O partial pressure using neutron reflectivity. The adhesive fracture energies of these PMMA/SiO2 interfaces at the same conditions were determined using a shaft-loaded blister test. Discontinuities in the adhesive fracture energy, bulk moisture solubility, and the width of the interfacial moisture excess near the interface were observed at the critical RH. A mechanism based on the coupling of bulk swelling-induced stresses with the decreased cohesive strength due to moisture accumulation at the interface is proposed and is consistent with all experimental observations.

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Fundamentals of adhesion failure for a model adhesive (PMMA/Glass) joint in humid environments

Abstract

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