Lattice model for cold and warm swelling of polymers in water

Details Lattice model for cold and warm swelling of polymers in water Lattice model for cold and warm swelling of polymers in water

1999-12-06

arxiv.org/abs/cond-mat/9912085v1

Physical Review E (Rapid Comm.) 61, R2208 (2000)

Physics

Condensed Matter

Statistical Mechanics

REVTeX, 5 pages, 2 EPS figures

Scientific paper

10.1103/PhysRevE.61.R2208

We define a lattice model for the interaction of a polymer with water. We solve the model in a suitable approximation. In the case of a non-polar homopolymer, for reasonable values of the parameters, the polymer is found in a non-compact conformation at low temperature; as the temperature grows, there is a sharp transition towards a compact state, then, at higher temperatures, the polymer swells again. This behaviour closely reminds that of proteins, that are unfolded at both low and high temperatures.

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