Computer simulation of structure and microphase separation in model A-B-A triblock copolymers
M. Banaszak1 , S. Wołoszczuk1 , T. Pakuła2 , S. Jurga1
1 Macromolecular Physics Laboratory, Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
2 Max-Planck-Institute for Polymer Research, P.O. Box 3148, D-55021 Mainz, Germany
Physical Review E, 66, 031804 (2002)
A set of computer simulations for three symmetric A-B-A triblock copolymer microarchitectures at varying temperatures is reported. By using the cooperative motion algorithm we obtain energy, specific heat, end-to-end distance, and bridging fraction as a function of the reduced temperature. The order- disorder transition temperatures are determined, an outline of a symmetric A-B-A triblock copolymer phase diagram is presented, and the visualization of different microstructures is given. A bicontinuous microstructure is reported at 67% fraction of A component.