Solvent Effect on the Surface Morphology of Polymer Blend Thin Films During Spin-coating Process

Abstract

Abstract: Polystyrene/poly(methyl methacrylate)(PS/PMMA) was studied after the thin films were prepared on a glass substrate by spin-coating from tetrahydrofuran(THF) and methyl ethyl ketone(MEK) respectively. The solvent effect on the surface morphology of PS/PMMA blend thin films was investigated by atomic force microscopy(AFM) combined with selective dissolution. It is found that the phase inversion point of the PS/PMMA surface morphology shifts from PS/PMMA(30/70) in THF to PS/PMMA(40/60-50/50) in MEK. This could be explained by the different solubilities of PS and PMMA in the two solvents.

Key words: Polymer blend, Solvent effect, Phase inversion point

CLC Number:

O631

TrendMD:

ZONG Qi, XIE Xu-Ming, WANG Xiu-Feng . Solvent Effect on the Surface Morphology of Polymer Blend Thin Films During Spin-coating Process[J]. Chem. J. Chinese Universities, 2004, 25(12): 2363.

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Solvent Effect on the Surface Morphology of Polymer Blend Thin Films During Spin-coating Process

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