Critical dynamics of a polymer chain in a grafted monolayer
Critical dynamics of a polymer chain in a grafted monolayer
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接枝单层聚合物链的临界动力学
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
A. M. Skvortsov
中科院分区：
文献类型：
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作者：
L. Klushin;A. M. Skvortsov
考虑将聚合物链接枝到平面惰性表面并形成单层。发现单分散层中大尺度链弛豫时间的分子量依赖性为τ ~ n3，这与分子动力学数据一致。这种依赖性在接枝密度和溶剂质量的大范围变化中保持不变。结果表明，异常链弛豫是由于线圈拉伸过渡点附近的临界减速引起的
Polymer chains grafted onto a planar inert surface and forming a monolayer are considered. It is found that the molecular weight dependence of the time of large-scale chain relaxation in a monodisperse layer is τ∼N 3 , which is in accordance with the molecular dynamics data. This dependence is retained upon the wide-range variation in grafting density and solvent quality. It is shown that anomalous chain relaxation is due to the critical slowing-down near the coil-stretch transition point