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首页> 外文期刊>The European physical journal, E. Soft matter >Spontaneous bending of 2D molecular bottle-brush
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Spontaneous bending of 2D molecular bottle-brush

机译:2D分子瓶刷的自发弯曲

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摘要

Using a scaling approach we consider a 2D comb copolymer brush under bending deformations. We show that the rectilinear brush is locally stable and can be characterized by a persistence length lambda increasing with the molecular weight of grafting side chains as lambda similar to M-3. A bending instability due to redistribution of the side chains appears in the non-linear regime where bending is strong. Arguments are presented that the brush conformations consist of alternating rectilinear and bent sections corresponding to the different free-energy minima.
机译:使用缩放方法,我们考虑了弯曲变形下的2D梳形共聚刷。我们表明,直线刷是局部稳定的,并且可以通过与接枝侧链的分子量(如与M-3相似的λ)增加的持久长度λ来表征。由于侧链的重新分布而导致的弯曲不稳定性出现在非线性状态,在该状态下弯曲很强。提出了这样的论点,即刷子的构型由交替的直线和弯曲部分组成,分别对应于不同的自由能最小值。

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