Diblock copolymers at a homopolymer-homopolymer-interface: a Monte Carlo simulation

Details Diblock copolymers at a homopolymer-homopolymer-interface: a Monte Carlo simulation Diblock copolymers at a homopolymer-homopolymer-interface: a Monte Carlo simulation

1997-03-06

arxiv.org/abs/physics/9703010v1

Macromolecules 29, 8241 (1996)

Physics

Chemical Physics

Scientific paper

The properties of diluted symmetric A-B diblock copolymers at the interface between A and B homopolymer phases are studied by means of Monte Carlo (MC) simulations of the bond fluctuation model. We calculate segment density profiles as well as orientational properties of segments, of A and B blocks, and of the whole chain. Our data support the picture of oriented ``dumbbells'', which consist of mildly perturbed A and B Gaussian coils. The results are compared to a self consistent field theory (SCFT) for single copolymer chains at a homopolymer interface. We also discuss the number of interaction contacts between monomers, which provide a measure for the ``active surface'' of copolymers or homopolymers close to the interface.

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