Probing Intermittent Motion of Polymer Chains in Weakly Attractive Nanocomposites
Probing Intermittent Motion of Polymer Chains in Weakly Attractive Nanocomposites
复制标题
探测弱吸引力纳米复合材料中聚合物链的间歇运动
DOI:
10.1007/s10118-020-2352-7
复制
发表时间:
2019-11
影响因子:
4.3
通讯作者:
Sun Zhao-Yan
中科院分区:
文献类型:
--
作者:
Dai Li-Jun;Fu Cui-Liu;Zhu You-Liang;Li Zhan-Wei;Sun Zhao-Yan
In this study, we investigate the motion of polymer segments in polymer/nanoparticle composites by varying nanoparticle (NP) volume fractions. By studying the probability distribution of segment displacement, segment trajectory, and the square displacement of segment, we find the intermittent motion of segments, accompanied with the coexistence of slow and fast segments in polymer nanocomposites (PNCs). The displacement distribution of segments exhibits an exponential tail, rather than a Gaussian form. The intermittent dynamics of chain segments is comprised of a long-range jump motion and a short-range localized motion, which is mediated by the weakly attractive interaction between NP and chain segment and the strong confinement induced by NPs. Meanwhile, the intermittent motion of chain segments can be described by the adsorption-desorption transition at low particle loading and confinement effect at high particle loading. These findings may provide important information for understanding the anomalous motion of polymer chains in the presence of NPs.
登录
查看更多内容
影响因子:
16.6
作者:
Sentjabrskaja T;Zaccarelli E;De Michele C;Sciortino F;Tartaglia P;Voigtmann T;Egelhaaf SU;Laurati M
通讯作者:
Laurati M
影响因子:
3.4
作者:
Wei-Yin Chien;Yeng-Long Chen
通讯作者:
Wei-Yin Chien;Yeng-Long Chen
影响因子:
2.4
作者:
A. Einstein
通讯作者:
A. Einstein
影响因子:
3.4
作者:
B. van der Meer;W. Qi;J. Sprakel;L. Filion;M. Dijkstra
通讯作者:
B. van der Meer;W. Qi;J. Sprakel;L. Filion;M. Dijkstra
DOI:
10.1119/1.11184
发表时间:
1998-06
期刊:
--
影响因子:
--
作者:
J. Hansen;I. R. Mcdonald;D. Henderson
通讯作者:
J. Hansen;I. R. Mcdonald;D. Henderson