| 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: |
 Click here to retrieve PDF version of paper (109KB) |
