Dresden 2006 – wissenschaftliches Programm

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CPP: Chemische Physik und Polymerphysik

CPP 1: Thin Films and Surfaces I

CPP 1.5: Vortrag

Montag, 27. März 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.