Self-avoiding-self-attracting model of polymer collapse and adsorption
Serge Cattarinussi, Giancarlo Jug · Journal de Physique II · 1991
We present a detailed study of a new geometrical model of polymer phase transition in the bulk and near interfaces. For the coil-globule transition in the bulk we recover the correct phase diagram and approximate exponents. When an attractive substrate is present a richer phase structure appears with the strong possibility of coexistence of collapse and adsorption. We estimate size exponent and the fixed point structure by means of cell-renormalization methods in both d = 2 and d = 3 dimensions, providing some evidence for the enhancement of the collapse transition temperature in the presence of the adsorbing substrate.