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Publication Citation: Harnessing Wrinkle Delamination Mechanics to Measure and Pattern Polymer Coatings

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Author(s): Adam J. Nolte; Jun Y. Chung; Christopher M. Stafford;
Title: Harnessing Wrinkle Delamination Mechanics to Measure and Pattern Polymer Coatings
Published: March 21, 2010
Abstract: Compressive stresses in stiff polymer coatings can give rise to surface instabilities in which the coating adopts a sinusoidally wrinkled morphology with a dominant wavelength, d, as displayed in Figure 1a. Such instabilities are generally observed for polymer coatings that are well-adhered to compliant substrates. Compressively stressed coatings may also simply delaminate over a localized area these features, commonly called blisters, are formed in systems where the compliance of the substrate is high and/or coating-substrate adhesion is poor. Between these two extremes of behavior, one can observe wrinkling delamination , where a coating initially wrinkles but then forms blisters of width L that relax the wrinkling stability within an approximate width R. While both wrinkling instabilities and buckle delamination have been well-studied in the literature, wrinkling delamination has received very little attention. This talk will lay a theoretical foundation for wrinkling delamination and demonstrate how studying this phenomenon can lead to new approaches for measuring the adhesion strength of polymer coatings and patterning microscale features.
Conference: American Chemical Society, Spring 2010 National Meeting & Exposition
Pages: pp. 1 - 1
Location: San Francisco, CA
Dates: March 21-25, 2010
Keywords: adhesion; polymer; coatings; wrinkling; delamination; mechanics; patterning
Research Areas: Polymers, Characterization, Nanomaterials, Advanced Materials
PDF version: PDF Document Click here to retrieve PDF version of paper (111KB)