@article{Flachmuller2021-05-25Coars-53923,
  year={2021},
  doi={10.1088/1361-648X/abf881},
  title={Coarse grained simulation of the aggregation and structure control of polyethylene nanocrystals},
  number={26},
  volume={33},
  issn={0953-8984},
  journal={Journal of Physics: Condensed Matter},
  author={Flachmüller, Alexander and Mecking, Stefan and Peter, Christine},
  note={Article Number: 264001}
}

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    <dc:contributor>Mecking, Stefan</dc:contributor>
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    <dcterms:abstract xml:lang="eng">Polyethylene (PE) telechelics with carboxylate functional groups at both ends have been shown to assemble into hexagonal nanocrystal platelets with a height defined by their chain length in basic CsOH-solution. In this coarse grained (CG) simulation study we show how properties of the functional groups alter the aggregation and crystallization behavior of those telechelics. Systematic variation of the parameters of the CG model showed that important factors which control nanoparticle stability and structure are the PE chain length and the hydrophilicity and the steric demand of the head groups. To characterize the aggregation process we analyzed the number and size of the obtained aggregates as well as intramolecular order and intermolecular alignment of the polymer chains. By comparison of CG and atomistic simulation data, it could be shown that atomistic simulations representing different chemical systems can be emulated with specific, different CG parameter sets. Thus, the results from the (generic) CG simulation models can be used to explain the effect of different head groups and different counterions on the aggregation of PE telechelics and the order of the obtained nanocrystals.</dcterms:abstract>
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    <dc:creator>Flachmüller, Alexander</dc:creator>
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    <dc:contributor>Peter, Christine</dc:contributor>
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