Predicting χ of Polymer Blends Using Atomistic Morphing Simulations
Predicting χ of Polymer Blends Using Atomistic Morphing Simulations
复制标题
使用原子变形模拟预测聚合物共混物的 α
DOI:
10.1021/acs.macromol.1c01550
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发表时间:
2021
期刊:
影响因子:
5.5
通讯作者:
Milner, Scott T.
中科院分区:
文献类型:
--
作者:
Shetty, Shreya;Gomez, Enrique D.;Milner, Scott T.
The Flory Huggins interaction parameter χ measures the compatibility of different species in mixtures and governs their phase behavior. We have previously used molecular dynamics (MD) simulations and thermodynamic integration along the path of transformation of one species to another (morphing), to determine χ in coarse-grained bead-spring models of polymer blends. In this work, we use united-atom (UA) MD simulations and morphing to calculate χ for real polymer blends: (1) poly(ethylene) and poly(ethylene oxide), (2) poly(styrene) and poly(2-vinyl pyridine), (3) poly(isoprene) and saturated poly(isoprene), and (4) poly(styrene) and poly(α-methyl styrene). These examples require different schemes for transforming chains: changing Lennard Jones parameters and partial charges (case 1 and 2), transforming double bonds to single bonds (case 3), and making atoms disappear (case 4). For the first three blends, χ predictions agree reasonably with experiments but are sensitive to the choice of force field parameters. For poly(styrene)/poly(α-methyl styrene), we reach the limits of the morphing method.
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影响因子:
5.5
作者:
Qile P Chen;Justine D. Chu;Robert F. DeJaco;T. Lodge;J. Siepmann
通讯作者:
J. Siepmann
DOI:
--
发表时间:
1987
期刊:
影响因子:
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作者:
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通讯作者:
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影响因子:
5.5
作者:
Shetty, Shreya;Adams, Milena M.;Gomez, Enrique D.;Milner, Scott T.
通讯作者:
Milner, Scott T.
DOI:
--
发表时间:
1982
期刊:
影响因子:
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作者:
M. Shaw
通讯作者:
M. Shaw
DOI:
--
发表时间:
1985
期刊:
影响因子:
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作者:
T. Shiomi;K. Kohno;K. Yoneda;Tetsuo Tomita;M. Miya;K. Imai
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