Kinetics of morphological transitions between mesophases
Kinetics of morphological transitions between mesophases
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DOI：
10.1088/0953-8984/13/41/304
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发表时间：
2001-10
期刊：
影响因子：
--
通讯作者：
M. Nonomura;T. Ohta
中科院分区：
文献类型：
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作者：
M. Nonomura;T. Ohta
基于嵌段共聚物微相分离模型方程，研究了介观结构之间形态转变的动力学。通过单波数近似得到了调制结构的相图。为了研究畴的时间演化，我们导出了弱分凝区调制结构振幅的耦合方程组。对层状结构和六方结构之间的转变进行了二维模拟，并与理论结果进行了比较。还提出了三维模拟。
We investigate the dynamics of morphological transitions between mesoscopic structures on the basis of the model equation for microphase separation of block copolymers. The phase diagram for the modulated structures is obtained by means of the single-wavenumber approximation. In order to study the time evolution of domains, we derive a coupled set of equations for the amplitudes of the modulated structures in the weak-segregation regime. Simulations of the transitions between lamellar and hexagonal structures are carried out in two dimensions and the results are compared with the theory. Simulations in three dimensions are also presented.