Dewetting of thin diblock copolymer films: Spinodal dewetting kinetics

Müller-Buschbaum, P.; Gutmann, Jochen S.; Lorenz-Haas, C.; Wunnicke, O.; Stamm, Manfred; Petry, W.

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Dewetting of thin diblock copolymer films: Spinodal dewetting kinetics

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Gutmann, Jochen S.
MPI for Polymer Research, Max Planck Society;

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Lorenz-Haas, C.
MPI for Polymer Research, Max Planck Society;

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Stamm, Manfred
MPI for Polymer Research, Max Planck Society;

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Citation

Müller-Buschbaum, P., Gutmann, J. S., Lorenz-Haas, C., Wunnicke, O., Stamm, M., & Petry, W. (2002). Dewetting of thin diblock copolymer films: Spinodal dewetting kinetics. Macromolecules, 35(6), 2017-2023.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-6666-1

Abstract

The stability of thin diblock copolymer films with respect to the annealing above the microphase separation temperature is investigated on long time scales and at different film thicknesses. Poly(styrene-block-p-methylstyrene) diblock copolymer films on top of silicon substrates are examined with scanning force microscopy and off-specular X-ray scattering. At film thickness below the lamellar spacing of the bulk material a dewetting is observed. The kinetics of the film destabilization are explainable within a spinodal dewetting model. The observed dewetting structures belong to a wet dewetting. In the case of film thicknesses which enable the buildup of a few lamellae no sign of instability was detected.