Methanol-water solutions:: A bi-percolating liquid mixture
Methanol-water solutions:: A bi-percolating liquid mixture
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DOI：
10.1063/1.1789951
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发表时间：
2004-10-01
影响因子：
4.4
通讯作者：
Soper, AK
中科院分区：
文献类型：
--
作者：
Dougan, L;Bates, SP;Soper, AK
一系列广泛的中子衍射实验和分子动力学模拟表明，甲醇和水的混合物在溶液中表现出扩展的结构，尽管组分在所有比例下都是完全混溶的。特别令人感兴趣的是一个浓度区域（甲醇摩尔分数在0.27和0.54之间），其中甲醇和水似乎形成单独的，分散的网络。这是许多输运性质和热力学过剩函数达到极值的浓度范围。因此，观察到的溶液的这些材料性质中的几个的浓度依赖性可能具有结构起源。(C)2004年，美国物理学会。
An extensive series of neutron diffraction experiments and molecular dynamics simulations has shown that mixtures of methanol and water exhibit extended structures in solution despite the components being fully miscible in all proportions. Of particular interest is a concentration region (methanol mole fraction between 0.27 and 0.54) where both methanol and water appear to form separate, percolating networks. This is the concentration range where many transport properties and thermodynamic excess functions reach extremal values. The observed concentration dependence of several of these material properties of the solution may therefore have a structural origin. (C) 2004 American Institute of Physics.