Coarse-Grained Simulations of Model Polymer Nanofibres
Coarse-Grained Simulations of Model Polymer Nanofibres
复制标题
模型聚合物纳米纤维的粗粒度模拟
DOI:
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Guido Raos
中科院分区:
文献类型:
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作者:
A. Milani;M. Casalegno;C. Castiglioni;Guido Raos
We describe the development of a coarse-grained (CG) force field for nylon-6 (polycaprolactam) and its application to the simulation of the structure and macromolecular dynamics within cylindrical fibres formed by this polymer, having diameters in the 14―28 nm range. Our CG model is based on the MARTINI force field for the non-bonded interactions and on Boltzmanninverted gas-phase atomistic simulations for intramolecular stretching and bending energies. The simulations are carried out on infinite, isolated nanofibres at temperatures of 300,400 and 500 K, with different starting configurations. Starting from ordered chain-extended configurations, we simulate the melting of the polymer in the nanofibres and, after cooling back to room temperature, its re-crystallization in a chain-folded lamellar configuration. This agrees with experimental observations on electrospun nylon-6 nanofibres and demonstrated the suitability of the approach for the simulation of these systems. The effect of nanoscale confinement on the structure and dynamics of the polymer chains is extensively discussed.
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DOI:
10.1021/jp9058966
发表时间:
2009-10-08
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Lee H;de Vries AH;Marrink SJ;Pastor RW
通讯作者:
Pastor RW
DOI:
10.1063/1.2993111
发表时间:
2008-10
期刊:
The Journal of chemical physics
影响因子:
--
作者:
H. A. Karimi‐Varzaneh;P. Carbone;F. Müller-Plathe
通讯作者:
H. A. Karimi‐Varzaneh;P. Carbone;F. Müller-Plathe
影响因子:
--
作者:
J. Ponder;D. Case
通讯作者:
J. Ponder;D. Case
影响因子:
5.5
作者:
Liu, Yi;Cui, Li;Fong, Hao
通讯作者:
Fong, Hao