Decay kinetics of nanoscale corrugation gratings on polymer surface: Evidence for polymer flow below the glass temperature
Macromolecules. Bd. 37. H. 23. Washington: American Chemical Society 2004 S. 8647 - 8652
Erscheinungsjahr: 2004
ISBN/ISSN: 0024-9297
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1021/ma049595z
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Inhaltszusammenfassung
The near-surface rheology of polystyrene films at temperatures around T-g was probed via the decay kinetics of shallow, nanoscale surface corrugation gratings. The gratings were created via hot embossing with a stepped silicon template. The wavelengths are distributed in a range between 25 and 60 nm and have a modulation depth of about 0.8 run peak-to-peak. Upon heating, one observes a surface tension-driven decay of the surface corrugation at temperatures more than 30 deg below the bulk Tg. ...The near-surface rheology of polystyrene films at temperatures around T-g was probed via the decay kinetics of shallow, nanoscale surface corrugation gratings. The gratings were created via hot embossing with a stepped silicon template. The wavelengths are distributed in a range between 25 and 60 nm and have a modulation depth of about 0.8 run peak-to-peak. Upon heating, one observes a surface tension-driven decay of the surface corrugation at temperatures more than 30 deg below the bulk Tg. Such a fast decay is unexpected and indicates a strongly lowered glass temperature near the surface.» weiterlesen» einklappen
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DDC Sachgruppe:
Physik
