Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

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 May 27, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created February 29, 2004, Updated October 12, 2021