Liquid-crystalline ordering in ord-coil diblock copolymers studied by mesoscale simulations
| Autor: | J. H. R. Clarke, Abdullah A. Al-Sunaidi, W. K. den Otter |
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| Přispěvatelé: | Faculty of Science and Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Materials science
IR-87006 General Mathematics Transition temperature Isotropy Dissipative particle dynamics General Engineering General Physics and Astronomy METIS-218912 Rod Condensed Matter::Soft Condensed Matter Crystallography Lamella (surface anatomy) Liquid crystal Chemical physics Phase (matter) Copolymer |
| Zdroj: | Philosophical Transactions of the Royal Society of London A. Mathematical, Physical and Engineering Sciences, 362(1821), 1773-1781. Royal Society of London |
| ISSN: | 1364-503X |
| Popis: | Using mesoscale dissipative particle dynamics (DPD) simulations, which ignore all atomistic details, we show the formation of lamella mesophases by cooling a fully disordered system composed of symmetric (A7B7) rod-coil diblock copolymers. Equilibration is achieved very rapidly using DPD, and isotropic, smectic A and crystalline phases of the rod-like blocks can be observed either by heating or cooling. An interesting pseudo-smectic phase can be characterized when the order-disorder transition temperature is above the clearing temperature. This phase gradually fades into a normal microphase-separated structure as the system is heated through the clearing temperature. Simulations of pure rods, however, show the formation of isotropic, nematic, smectic A and crystalline phases. |
| Databáze: | OpenAIRE |
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