A SELF-AVOIDING WALK MODEL OF COPOLYMER ADSORPTION

We discuss a self-avoiding walk model of the adsorption of a copolymer at a plane surface, where the copolymer contains two types of monomer s. We concentrate on the case where one type of monomer (A) has a shor t-range interaction with the surface and the other (B) has no interact ion with the surface. We show that the sequence distribution of the co monomers affects the location of the adsorption transition and that fo r some sequence distributions the adsorption transition occurs at the same place as for the homopolymer poly-A. Moreover, in some circumstan ces the crossover exponent is identical to that of poly-A.