Analysis of interfacial phenomena of aqueous solutions of polyethylene oxide and polyethylene glycol flowing in hydrophilic and hydrophobic capillary viscometers

被引：8

作者：

Cai, JL

Bo, SQ

Cheng, RS ^{[1
]}

Jiang, LS

Yang, Y

机构：

[1] Nanjing Univ, Dept Biochem, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Natl Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China

[3] Nanjing Univ, Key Lab Mesoscop Mat Sci, Nanjing 210093, Peoples R China

[4] Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[5] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2004年 / 276卷 / 01期

基金：

高等学校博士学科点专项科研基金;

关键词：

polyethylene oxide; polyethylene glycol; viscosity; viscosity measurement; polytetrafluoroethylene; viscometer;

D O I：

10.1016/j.jcis.2004.03.008

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：

Viscosities of aqueous solutions of five polyethylene oxide (PEO) samples with molar masses from 1.5 x 10(5) to 1.0 x 10(6) were carefully measured in a polytetrafluoroethylene (PTFE) capillary Ubbelohde viscometer in the concentration range from dilute down to extremely dilute concentration regions and compared with those of the same sample obtained from a glass capillary viscometer. At the same time, viscosities of aqueous solutions of three PEG samples in glass and paraffin-coated capillary viscosity were measured. The wall effects occurred in viscosity measurements for PEO and PEG aqueous solutions in different capillary viscometers were theoretically analyzed and discussed. It was found that different interfacial behaviors occurred in both hydrophobic and hydrophilic capillary viscometers respectively and the interfacial behaviors also exhibit molar mass dependence. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：174 / 181

页数：8

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