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PUBLICATIONS

Finite-Size Effects on Surface Segregation in Polymer Blend Films Above and Below the Critical Point of Phase Separation

Published

Author(s)

H Grull, Li Piin Sung, Alamgir Karim, Jack F. Douglas, Sushil K. Satija, Makoto Hayashi, H Jinnai, TT Hashimoto, Charles C. Han

Abstract

We investigate the influence of temperature and confinement on surface segregation in thin films of deuterated polybutadiene and polyisoprene near the critical point for phase separation. Neutron reflectivity measurements show that polyisoprene enriches at the air and silicon interfaces in both the 1 and 2-phase regions. A transition between in-plane and surface-directed (layered) phase separation is observed with increasing film thickness.
Citation
Europhysics Letters
Volume
65
Issue
No. 5
Pub Type
Journals

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Keywords

blend film, finite si, phase separation, surface correlation length, surface segregation critical point, surface-directed phase separation

Citation

Grull, H. , Sung, L. , Karim, A. , Douglas, J. , Satija, S. , Hayashi, M. , Jinnai, H. , Hashimoto, T. and Han, C. (2004), Finite-Size Effects on Surface Segregation in Polymer Blend Films Above and Below the Critical Point of Phase Separation, Europhysics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852233 (Accessed April 25, 2024)

Created February 29, 2004, Updated October 12, 2021