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The proposed model employed is an adsorbed flexible macromolecule with an arbitrary contour length placed in an effective mean field created by intermolecular interactions with other polymer chains. It is shown that there exists a first order phase transition of the chain from the absorbed state to elongated one. This transition is accompanied by а sharp growing of fluctuations, a presence of intermediate metastable states, and jumps of degree of elongation, energy and heat-capacity of chains.

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The purpose of this work is in development of the model that allows to investigate the conformations of macromolecules near the interface \dielectric-metal" depending on the conditions of formation of the polymer coating. In the modified model of \sticky tape", one part of macromolecule is anchored to the metal surface while the other can be elongated due to effective mean (molecular) field of dipolar type formed by free ends of other chains. The dynamic Monte-Carlo method for Langmuir's model is used for calculation of adhesion force taking into account the interaction energy of monomers with the metal surface. It is shown that conformation of polymer chain is defined by temperature conditions of its formation. The obtained results are confirmed by the data of production tests on polymer coatings in JSC \Severstal".