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Explaining spin labelling results through a mean field model of cooperative polymer adsorption with excluded volume

Authors
Journal
Colloids and Surfaces A Physicochemical and Engineering Aspects
0927-7757
Publisher
Elsevier
Volume
400
Identifiers
DOI: 10.1016/j.colsurfa.2012.02.037
Keywords
  • Amorphous And Polymeric Materials
  • Solid/Fluid Interface Processes
  • Magnetic Resonance And Relaxation

Abstract

Abstract A mean field model is used to interpret the results of the spin labelling method and electron paramagnetic resonance on the conformations of polymers laying on a solid surface. Usually two different environments are detected namely trains tumbling slowly on the solid and loops and tails moving fast in solution. In evaluating these two parts it is possible to have a picture of the molecular state of the chains, flat or extended. The measured points are consistent with a cooperative character of the adsorption process. The model is modified in order to include that aspect.

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