Structure and macroscopic tackiness of ultrathin pressure sensitive adhesive films
| Autor: | Jan Perlich, Peter Müller-Buschbaum, David Magerl, Volker Körstgens, Katharina Ecker, Stephan V. Roth, Alexander Diethert |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Light Polymers Surface Properties chemistry.chemical_compound Adhesives Polymer chemistry Materials Testing Pressure Scattering Radiation General Materials Science Thin film Composite material Methyl acrylate chemistry.chemical_classification Acrylate White light interferometry X-Rays Polymer X-ray reflectivity Chemistry Interferometry chemistry Acrylates Grazing-incidence small-angle scattering Adhesive Stress Mechanical |
| Zdroj: | ACS applied materialsinterfaces. 4(8) |
| ISSN: | 1944-8252 |
| Popis: | Ultrathin layers of the statistical copolymer P(nBA-stat-MA) with a majority of n-butyl acrylate (nBA) and a minority of methyl acrylate (MA) are characterized with respect to the film morphology and the mechanical response in a probe tack test. The probed copolymer can be regarded as a model system of a pressure sensitive adhesive (PSA). The films are prepared by spin-coating which enables an easy thickness control via the polymer concentration of the solution. The film thickness is determined with x-ray reflectivity (XRR) and white light interferometry (WLI). Grazing incidence small angle x-ray scattering (GISAXS) provides detailed and statistically significant information about the film morphology. Two types of lateral structures are identified and no strong correlation of these structures with the PSA film thickness is observed. In contrast, prominent parameters of the probe tack test, such as the stress maximum and the tack energy, exhibit an exponential dependence on the film thickness. |
| Databáze: | OpenAIRE |
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