Study on the interfacial properties of viscous capillary flow of dilute acetic acid solutions of chitosan

被引：5

作者：

Cai, Zhengchun ^{[1
]}

Dai, Jie ^{[1
]}

Yang, Hu ^{[1
]}

Cheng, Rongshi ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, MOE, Key Lab Mesoscop Chem, Nanjing 210093, Peoples R China

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

来源：

CARBOHYDRATE POLYMERS | 2009年 / 78卷 / 03期

关键词：

Chitosan; Interfacial properties of viscous capillary flow; Solute adsorption effect; ADSORPTION; VISCOSITY; SURFACE;

D O I：

10.1016/j.carbpol.2009.05.009

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The relative viscosities of acetic acid solutions of chitosan at varied temperatures were measured in a common glass capillary Ubbelohde viscometer in the range from dilute down to extremely dilute concentration. With the aid of the newly proposed theory related to the effect of solute adsorption on the relative viscosity measurement, the experimental data was analyzed, and some interesting parameters describing the interfacial properties of viscous capillary flow were deduced. The change of the conformation of the chitosan chains both free dissolved in solution and adsorbed on the glass capillary surface were discussed in detail. Furthermore, the morphologies of the adsorbed chitosan was also observed by AFM. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：488 / 491

页数：4

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