Mushroom-shaped Morphology Formed in Thin Films of Cylinder-forming Block Copolymer

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (1): 150-153.

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Mushroom-shaped Morphology Formed in Thin Films of Cylinder-forming Block Copolymer

GONG Yu-mei*, SONG Jing-chuan and ZHANG Gui-xia

School of Chemical and Material, Dalian Polytechnic University, Dalian 116034, P. R. China

Received:2010-05-17 Revised:2010-08-16 Online:2011-01-25 Published:2011-01-04
Contact: GONG Yu-mei E-mail:ymgong@dlpu.edu.cn
Supported by:
Supported by the Liaoning Provincial Foundation for Doctors(China)(No.910502).

Abstract

Abstract: The morphology of the film of polystyrene-block-poly(methyl methacrylate)(PS-b-PMMA) block copolymer having polystyrene(PS) cylinder forming composition spin-coated on a neutral brush modified silicon substrate has been investigated in this report. A mushroom-shaped morphology formed in the film with one period to two periods(L0―2L0) in thickness, which was spin-coated under a low humidity condition(RH ca.13%) and then thermally annealed at an extreme high temperature(230 °C). The results suggest that the spin-coating condition together with the confinement conditions plays a crucial role in the interesting morphology formation.

Key words: Block copolymer, Film, Morphology

GONG Yu-mei*, SONG Jing-chuan and ZHANG Gui-xia. Mushroom-shaped Morphology Formed in Thin Films of Cylinder-forming Block Copolymer[J]. Chemical Research in Chinese Universities, 2011, 27(1): 150-153.

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Mushroom-shaped Morphology Formed in Thin Films of Cylinder-forming Block Copolymer

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