Microwave dielectric spectroscopy of 2-pyrrolidone plus water mixtures

被引：15

作者：

Aparicio, Santiago ^{[1
]}

Alcalde, Rafael ^{[1
]}

Garcia, Begona ^{[1
]}

Leal, Jose M. ^{[1
]}

机构：

[1] Univ Burgos, Dept Chem, Burgos 09001, Spain

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 444卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2007.07.033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dielectric response of 2-pyrrolidone + water binary mixtures was studied using microwave dielectric spectroscopy at 298.15 K and ambient pressure in the entire composition range. The mixture behaviour is described according to three Debye terms whose evolution with composition is analyzed. A complex mixture structure is inferred from the results arising from the ability of homo and hetero-association that show both molecules. The effect of 2-pyrrolidone on water structure at low lactam concentrations is very remarkable resulting in a reinforcement of the hydrogen bonding in the mixture, which is in agreement with previous thermophysical and theoretical studies. (C) 2007 Elsevier B.V. All rights reserved.

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页码：252 / 257

页数：6

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