Effect on the Viscometric Properties of Sodium Carboxymethylcellulose in a Dimethylacetamide and Acetone Mixture

被引：11

作者：

Ardhaoui, Wiem ^{[1
]}

Cherif, Emna ^{[1
,3
]}

Herth, Etienne ^{[2
]}

机构：

[1] Univ Tunis El Manar, Fac Sci Tunis, LR99ES16, Lab Phys Matiere Molle & Modelisat Electromagnet, Tunis, Tunisia

[2] Univ Paris Saclay, Univ Paris Sud, Ctr Nanosci & Nanotechnol, CNRS,UMR 9001, Orsay, France

[3] Univ Tunis El Manar, Fac Sci Tunis, LR99ES16, Lab Phys Matiere Molle & Modelisat Electromagnet, Tunis 2092, Tunisia

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS | 2023年 / 62卷 / 10期

关键词：

viscosity; temperature; polysaccharide; sodium carboxymethylcellulose; dimethylacetamide; acetone; adsorption; COUNTERION CONDENSATION; INTRINSIC-VISCOSITY; PERSISTENCE LENGTH; FREE-ENERGY; SOLVATION; CELLULOSE; DYNAMICS; WATER; GUM;

D O I：

10.1080/00222348.2023.2231800

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The main objective of our research described here was to determine the viscometric properties of polysaccharide solutions of sodium carboxymethyl cellulose (CMC) in dimethylacetamide (DMA)/acetone (A) mixtures. The evolution of the dynamic and intrinsic viscosities and the effect of the intrinsic Gibbs energy of CMC in DMA/A (44 ml/6 ml) were characterized as a function of the temperature (293.15 to 318.15) K, and concentration (1 to 10) g/l. We identified four main concentration regimes, corresponding to an absorption regime, a dilute regime, a critical regime, and the semi-dilute regime. The thermodynamic parameters of the viscosity also supported the obtained results. Exploiting our results, CMC/DMA/A is a promising solvent mixture for use in pharmaceutical and antibacterial applications.

引用

页码：557 / 571

页数：15

共 38 条

[1] Effect of microbial exopolysaccharide on wheat bran sourdough: Rheological, thermal and microstructural characteristics [J].