Abstract
We investigate using scaling methods and Monte Carlo simulations random AB-copolymers at the interface between two good solvents. The asymmetry of the interface potential gives rise to an adsorption–desorption transition which shows for infinitely long chains a critical point. For finite chains we analyze the crossover scaling behavior near this critical point. Two new interface exponents, namely the crossover exponent φ and the interface order parameter exponent β are proposed. Simulation results obtained using the bond fluctuation model agree well with the scaling predictions. From the simulation data we obtain as best estimates φ=1.3±0.1 and β=0.35±0.04.
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