J. Phys. II France
Volume 7, Numéro 9, September 1997
Page(s) 1287 - 1298
DOI: 10.1051/jp2:1997187
J. Phys. II France 7 (1997) 1287-1298

A New Scaling Theory of Semiflexible Polymer Phases Near Attracting Surfaces

Dmitri V. Kuznetsov and Wokyung Sung

Department of Physics, Pohang University of Science and Technology, Pohang, 790-784, Korea

(Received 18 August 1996, revised 16 May 1997, accepted 26 May 1997)

The finite chain backbone stiffness in polymers gives rise to a number of novel behaviors described on short length scales. We analyze the semiflexible polymer phases near surfaces using a new scaling theory, incorporating the surface attraction in terms of its range and depth. It is found that the phase diagram includes five different phases: desorbed, weakly-adsorbed with both isotropic and nematic-type distribution of polymer segments inside the potential well, strongly-adsorbed states with the isotropic and nematic-type distribution. We draw conclusions on the orders of the transitions between the phases.

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