Coarse-Grained Modelling and Temperature Effect on the Morphology of PS-b-PI Copolymer.

ABSTRACT: Spontaneous spatial organization behavior and the aggregate morphology of polystyrene-block-polyisoprene (PS-b-PI) copolymer were investigated. Molecular dynamic (MD) and mesoscopic simulations using the dynamic of mean field density functional theory (DDF) were adopted to investigate the morphology changes exhibited by this block copolymer (BCP). In the mesoscopic simulations, several atoms in repeating units were grouped together into a bead representing styrene or isoprene segments as a coarse-grained model. Inter-bead interactions and essential parameters for mesoscopic models were optimized from MD simulations. Study indicated that morphology alternations can be induced in this system at annealing temperature of 393, 493, and 533 K. From our simulations, lamellar, bicontinuous, and he

SUBMITTER: Chiangraeng N 

PROVIDER: S-EPMC6630459 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature