Spontaneous bending of 2D molecular bottle-brush

Spontaneous bending of 2D molecular bottle-brush
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二维分子瓶刷的自发弯曲

DOI:
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发表时间:
2006
期刊:
The European Physical Journal E : Soft matter
影响因子:
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通讯作者:
G. ten Brinke
G. ten Brinke
中科院分区:
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文献类型:
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作者:
A. Subbotin;J. D. de Jong;G. ten Brinke

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翻译后摘要:使用缩放的方法,我们认为一个二维梳状共聚物刷弯曲变形。我们表明,直线刷是局部稳定的,并且可以通过持续长度λ随着接枝侧链分子量的增加而增加来表征,即λ M3。由于侧链的再分布,弯曲不稳定性出现在非线性政权的弯曲是强大的。参数提出的刷子构象包括交替的直线和弯曲的部分对应于不同的自由能极小值。
Abstract.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 λ increasing with the molecular weight of grafting side chains as λ ∼ M3. 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.