Shear dependent viscosity of poly(ethylene oxide) in two protic ionic liquids

被引：21
|
作者：
Smith, J. A. [1 ]
Webber, G. B. [1 ]
Warr, G. G. [2 ]
Zimmer, A. [3 ]
Atkin, R. [1 ]
Werzer, O. [1 ,3 ]
机构：
[1] Univ Newcastle, Newcastle Inst Energy & Resources, Ctr Adv Particle Proc & Transport, Callaghan, NSW 2308, Australia
[2] Univ Sydney, Sch Chem F11, Sydney, NSW 2006, Australia
[3] Graz Univ, Inst Pharmaceut Sci, Dept Pharmaceut Technol, A-8010 Graz, Austria
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2014年 / 430卷
基金：
澳大利亚研究理事会;
关键词：
Ionic liquids; Nanostructure; Polymer; PHYSICOCHEMICAL PROPERTIES; PHYSICAL-PROPERTIES; NEUTRON REFLECTION; 6-STEEL CONTACTS; TEMPERATURE; SOLVENTS; BEHAVIOR; RHEOLOGY; SURFACE; NANOPARTICLES;
D O I：
10.1016/j.jcis.2014.05.006
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：
Steady shear viscosity measurements have been performed on 100 kDa poly(ethylene oxide) (PEO) dissolved in the protic ionic liquids ethylammonium nitrate (EAN) and propylammonium nitrate (PAN) and in water. The zero shear viscosity in all three solvents increases with polymer concentration, falling into three concentration regimes corresponding to dilute, semi-dilute and network solutions. Huggins plots reveal three distinct solvent conditions: good (water), good-theta (EAN) and theta (PAN). However, differences in the transition concentrations, power law behaviour of the viscosities, and relaxation times arising from shear thinning in the two ILs can be directly related to the effects of solvent nanostructure. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：56 / 60
页数：5
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