Determination of the Flory - Huggins Parameter for a Pair of Polymer Units from AFM Data for Thin Filmsof Block Copolymers

E. A. Men’shikov^1,2, A. V. Bol’shakova², and I. V. Yaminskii²

¹ Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow,
119991 Russia

² Faculty of Physics, Moscow State University, Moscow, 119992 Russia

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Received March 6, 2008

Abstract — The structures of thin films of the polystyrene–polybutadiene–polystyrene (SBS) and polystyrene–poly(methyl acrylate)–polystyrene (SMAS) triblock copolymers were studied. The film morphology was found to depend on the conditions of film formation. The average domain sizes of these films and the period of the lamellar structure of SMAS films were determined. The Flory–Huggins parameter was estimated for a pair of styrene and methyl acrylate units.

PACS numbers: 87.64.Dz