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Aggregation Behaviour of Cationic Diblock Copolymer (MTAC)10(BA)16: MesoDyn Simulation Study |
| CAO Xiao-Rong;TAN Ye-Bang;XU Gui-Ying |
| Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100 |
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| Cite this article: |
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CAO Xiao-Rong, TAN Ye-Bang, XU Gui-Ying 2007 Chin. Phys. Lett. 24 411-413 |
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Abstract The aggregation behaviour of an amphiphilic cationic block copolymer (MTAC)10(BA)16 in aqueous solution is investigated by MesoDyn simulation. Simulation results show that (MTAC)10(BA)16 can form spherical, irregular and network aggregates with the increasing volume fraction. The time evolution of order parameter shows that the process of aggregate formation can be divided into diffusion control stage and hydrophobic interaction control stage, while the time evolution of energy indicates that the aggregate formation is driven by enthalpy but not entropy. The order parameter of the hydrophobic blocks BA increases with the increasing (MTAC)10(BA)16 concentration, while the time needed for system balance has the contrary trend.
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36.20.-r
82.20.Wt
61.46.+w
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Received: 18 July 2006
Published: 24 February 2007
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