Neutron-scattering determination of the Li+ environment in an aqueous poly(ethylene oxide) solution
Neutron-scattering determination of the Li+ environment in an aqueous poly(ethylene oxide) solution
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DOI：
10.1021/jp0308155
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发表时间：
2004-02-26
影响因子：
3.3
通讯作者：
Simonson, JM
中科院分区：
文献类型：
--
作者：
Annis, BK;Badyal, YS;Simonson, JM
用同位素取代中子衍射法研究了25 ℃附近D2 O/氘代聚环氧乙烷（PEO）混合溶剂中锂离子附近的相对溶剂化作用。Li+附近的局部结构的结果表明，水合结构非常类似于先前观察到的Li+在D2 O溶液中没有添加聚合物。对于所使用的混合溶剂比，PEO不与D2 O有效地竞争Li+附近的溶剂化位点。这些结果有助于我们理解的反应性和运输的离子物种在混合水相聚合物系统。
Neutron diffraction with isotopic substitution was used to assess the relative solvation interactions near lithium ions in a D2O/deuterated poly(ethylene oxide) (PEO) mixed solvent near 25degreesC. Results for local structure near Li+ indicate a hydration structure very similar to that observed previously for Li+ in D2O solution with no added polymer. For the mixed solvent ratio used, PEO does not compete effectively with D2O for solvation sites near Li+. These results contribute to our understanding of reactivity and transport of ionic species in mixed aqueous polymer systems.