Morphology of symmetric block copolymer in a cylindrical pore

G.J.A. Sevink, A.V. Zvelindovsky, J.G.E.M. Fraaije, H.P. Huinink

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The influence of confinement on morphology formation in copolymer systems is an important area of interest in theoretical research. We apply dynamic density functional theory to investigate the effect of pores on the morphology formation in a symmetric diblock copolymer system. The pore is represented by a perfect cylindrical tube. Porous systems are important in biology and are gaining interest for applications in nanotechnology. We show that for the pore sizes under investigation two equilibrium morphologies are possible depending on the surface interaction: a perpendicular or slab morphology and a parallel or multiwall tube morphology. The latter is referred to in the article as dartboard morphology. In the dynamic pathway towards this morphology an intermediate metastable helical phase is found. An important observation is that, for a wide range of pore radii and variations of polymer chain length, no mixed parallel/perpendicular morphologies were found: All observed morphologies are insensitive to the pore diameter.
Original languageEnglish
Pages (from-to)8226-8230
JournalJournal of Chemical Physics
Issue number17
Publication statusPublished - 2001


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