Protein-like behavior of multiblock copolymer chains in a selective solvent by a variety of lattice and off-lattice Monte Carlo simulations
K. Lewandowski1 , P. Knychała1 , M. Banaszak1
1 Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614, Poznan, Poland
Physica Status Solidi B, 245, No. 11, 2524-2532 (2008)
We present both lattice and off-lattice Monte Carlo simulations for multiblock copolymer chains of two lengths, N = 64 and N = 128, with microarchitectures (8–8)4 and (16–16)4, respectively. The simulations demonstrate that a variety of lattice and off-lattice Monte Carlo methods gives the same protein-like behavior, showing that the multiblock chains undergo a two-step transition, first from a swollen state to a secondary "pearl-necklace" state, and then to a tertiary superglobular state as the solvent quality decreases, that is upon cooling.