Dipolarity, hydrogen-bond basicity and hydrogen-bond acidity of aqueous poly(ethylene glycol) solutions

被引:53
|
作者
Kim, IW
Jang, MD
Ryu, YK
Cho, EH
Lee, YK
Park, JH [1 ]
机构
[1] Yeungnam Univ, Dept Chem, Kyongsan 712749, South Korea
[2] Taegu Univ, Dept Chem Educ, Kyongsan 712714, South Korea
[3] Andong Info Tech, Dept Hlth & Hyg, Andong 762830, South Korea
关键词
D O I
10.2116/analsci.18.1357
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Poly(ethylene glycol) (PEG) in water is known to alter the structure and/or state of water to give a different polarity from that of pure water. We determined using the solvatochromic comparison method the dipolarity/polarizability (pi*), hydrogen bond (HB) accepting basicity (beta) and HB donating acidity (alpha) of aqueous solutions of PEGs of variegated molecular weights at different concentrations in order to understand the influence of the polymer on these properties of water. It was observed that PEG decreases alpha for water while it does not change pi* and beta appreciably in the range of the molecular weight and compositions studied.
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收藏
页码:1357 / 1360
页数:4
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