Chain Orientation and Its Effect on Mobility at a Rubbed Surface. Pu, Y.; White, H.; Rafailovich, M. H.; Sokolov, J.; Schwarz, S. A.; Dhinojwala, A.; Agra, D. M. G.; Kumar, S. Department of Materials Science and Engineering, State University of New York, Stony Brook, NY, USA. Macromolecules (2001), 34(14), 4972-4977. CODEN: MAMOBX ISSN: 0024-9297. Journal written in English. CAN 135:167224 AN 2001:417537 CAPLUS

We have measured the tracer diffusion coeff. in PS films oriented by surface rubbing. The results show that the diffusion perpendicular to the rubbed surface is slower in oriented than in nonoriented chains. The decrease of the diffusion coeff. was correlated with the total oriented vol. as detd. by birefringence measurements.