文献类型：期刊文献

英文题名：Solvation Behaviors of Poly(acrylic acid) in Mixed Solvents of 2-Butoxyethanol plus Water

作者：Chen, Zhiyun[1];Yu, Sihan[1];Liu, Doudou[1];Shi, Shaoxiong[1];Shen, Weiguo[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China

年份：2018

卷号：47

期号：9

起止页码：1539

外文期刊名：JOURNAL OF SOLUTION CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000445915300009)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 21403067 and 21373085).

语种：英文

外文关键词：Volumetric property; 2-Butoxyethanol; Poly(acrylic acid); Cononsolvency

摘要：Poly(acrylic acid) (PAA) is a well known weak polyelectrolyte in water but little is known about the solvation behavior of PAA in the mixtures of alcohol+water. In this study, the solvation behavior of PAA in the mixed solvents composed of 2-butoxyethanol (2BE)+water were investigated by measurements of volumetric properties, electrical conductivity, resonance light scattering and dynamic light scattering. All the measured experimental properties showed extrema or abrupt changes at a 2BE mole fraction of about 0.017 in 2BE+water. This may be explained by the formation of aggregates of 2BE and water, which is a poor solvent for PAA and results in cononsolvency of PAA in the mixture of the two good solvents, 2BE and water. We found that the volumetric property is sensitive to the occurrence of the specific aggregate of 2BE and water and the interactions in the complex fluid mixtures.