Interfacial Diffusion of Fluids in Pressure Sensitive Adhesives

    Published: Jan 2005

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    Diffusion of acetone at the interface of a bonded pressure sensitive adhesive tape was measured using single frequency capacitance measurements (SFCM) and a novel interdigitated electrode sensor design. The relative concentration of acetone at the bondline as a function of distance from the edge of the specimen and exposure time was correlated to adhesion loss measured by the 90° peel test. This work suggests that these novel sensors are applicable for the study of interfacial diffusion processes. and could be extended to other coatings or adhesives in a variety of environments.


    interfaces, impedance, dielectric spectroscopy, non-destructive testing, durability, diffusion, coatings, water, neutron reflectivity

    Author Information:

    O'Brien, EP
    Guest Researcher, National Institute of Standards and Technology, Gaithersburg, MD

    Center for Adhesive and Sealant Science, Blacksburg, VA

    Ward, TC
    Center for Adhesive and Sealant Science, Blacksburg, VA

    Professor, Blacksburg, VA

    Committee/Subcommittee: D14.50

    DOI: 10.1520/STP11659S

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