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Static and dynamic properties of computer simulated melts of multiarm polymer stars
Affiliation:1. Faculty of Engineering, Niigata University, Ikarashi 2-no cho 8050, Nishi-ku, Niigata 9502181, Japan;2. Center for Transdisciplinary Research, Niigata University, Ikarashi 2-nocho 8050, Nishi-ku, Niigata 9502181, Japan;3. Institute of Applied Energy, 1-14-2, Nishi-Shimbashi 1-Chome, Tokyo 105-0003, Japan;4. Pacific Rim Solar Fuel System Research Center, Niigata University, 8050 Ikarashi 2-nocho, Niigata 950-2181, Japan;1. State Key Laboratory of Rolling & Automation, Northeastern University, Shenyang 110819, Liaoning, China;2. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, Liaoning, China;1. Federal University of Santa Catarina – UFSC, 205 João Pio Duarte da Silva St., Florianópolis, SC 88037-000, Brazil;2. Federal University of Santa Catarina – UFSC, Department of Civil Engineering, 205 João Pio Duarte da Silva St., Florianópolis, SC 88037-000, Brazil;3. From WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium,;4. de Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75, 1200 Brussels, Belgium,;5. Brussels Center for Redox Biology, 1200 Brussels, Belgium,;6. Center for Structural Biology, Vlaams Instituut voor Biotechnologie (VIB), 1050 Brussels, Belgium, and
Abstract:Cooperative motion algorithm (CMA) is applied to simulate properties of polymer stars in dense systems which are considered as representations of polymer melts. Effects of arm number and arm length of stars on static and dynamic properties of model systems are analysed. Static properties are characterised by star sizes and their spatial correlations. Dynamic properties describing arm orientation relaxation and translational motion of stars are presented. Results indicate strong ordering effects for multiarm stars in the melt and suggest that the terminal relaxation of star melts can alternatively be controlled by arm orientation relaxation or by cooperative star translations depending in the two parameters of star structure i.e. arm length and arm number.
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