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Relaxation Dynamics of Semiflexible Fractal Macromolecules

机译:半柔性分形大分子的弛豫动力学

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We study the dynamics of semiflexible hyperbranched macromolecules having only dendritic units and no linear spacers, while the structure of these macromolecules is modeled through T-fractals. We construct a full set of eigenmodes of the dynamical matrix, which couples the set of Langevin equations. Based on the ensuing relaxation spectra, we analyze the mechanical relaxation moduli. The fractal character of the macromolecules reveals itself in the storage and loss moduli in the intermediate region of frequencies through scaling, whereas at higher frequencies, we observe the locally-dendritic structure that is more pronounced for higher stiffness.
机译:我们研究了仅具有树枝状单元而没有线性间隔基的半柔性超支化大分子的动力学,而这些大分子的结构是通过T分形建模的。我们构造了动力矩阵的全套本征模,它耦合了Langevin方程组。基于随后的弛豫谱,我们分析了机械弛豫模量。大分子的分形特征通过定标显示在频率的中间区域的存储和损耗模量中,而在较高的频率下,我们观察到局部树突结构对于较高的刚度更为明显。

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