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CPP: Chemische Physik und Polymerphysik
CPP 1: Thin Films and Surfaces I
CPP 1.5: Talk
Monday, March 27, 2006, 11:00–11:15, ZEU Lich
Structural analysis of triblock / diblock copolymer blend films: A comparative GISAXS study of films obtained by spin-coating and solution casting — •V. Körstgens1, M.M. Abul Kashem1, S. Stüber1, S.V. Roth2, and P. Müller-Buschbaum1 — 1TU München, Physik-Department E13, James-Franck-Str. 1, D-85747 Garching, Germany — 2HASYLAB at DESY, Notkestr. 85, D-22603 Hamburg, Germany
Films of styrene-isoprene-styrene (SIS) triblock copolymer blended with styrene-isoprene (SI) diblock copolymer and a naphtenic oil are investigated with grazing incidence small angle X-ray scattering (GISAXS). Polymer films were prepared from toluene solution on glass slides by two different procedures: On the one hand spin-coating technique was applied and on the other hand films were solution casted and dried. Both types of films differ markedly in thickness and structure. Moreover surface and bulk structures can be distinguished. Surface sensitive probes such as atomic force microscopy and optical imaging complement the scattering experiment.