𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Electrical conductivity of cationic polyelectrolytes in aqueous solution

✍ Scribed by Hernán E. Ríos; Luis N. Sepúlveda; Consuelo I. Gamboa

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
341 KB
Volume
28
Category
Article
ISSN
0887-6266

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Four different fluoride, chloride, bromide, and nitrate cationic polyelectrolytes were prepared. Their electrolytic conductivity in aqueous dilute solution was investigated. The results show a remarkable increase, with dilution being practically constant down to limiting concentration. The limiting equivalent conductivity Λ° follows the order
$[ {\rm F}^ - \gg {\rm Cl}^ - > {\rm Br}^ - \approx {\rm NO}_3^ - ]$
The distances between neighboring charges calculated from experimental data are in good agreement with those calculated geometrically according to Manning's definition. The results are mainly dependent on the assumption that Br^−^ and NO~3~^−^ interact in a similar manner with the cationic charges on the polyion. This phenomenon also has been observed in cationic micelles.

📜 SIMILAR VOLUMES

Electrical conductivity and counterion a
Electrical conductivity and counterion association of cationic polyacrylamide derivatives in aqueous solution
✍ Liu, Shouping; Jia, Honbin; Yang, Du; Ji, Faxiang 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 125 KB 👁 2 views

Equivalent electrical conductivity (L) is reported for three series of cationic quaternary ammonium polyacrylamide derivatives with MeSO À 4 , Cl À , Br À and I À as counterions at 25 °C, the polyion equivalent concentration C ranging from 5.3 Â 10 À4 to 6.4 Â 10 À3 N and from 1.0 Â 10 À3 to 1.4 Â 1

Polyelectrolyte solutions. Electrical co
Polyelectrolyte solutions. Electrical conductivity and counterion condensation
✍ Hernán E. Ricos; Raúl G. Barraza; Irma C. Gamboa 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 374 KB

## Abstract We have analyzed the electrical conductivity of a linear high charge density polyelectrolyte aqueous solution, finding that the counterion association order follows the same pattern as that described for a cyclic monomeric polyelectrolyte, i.e. NO > Br^−^ > Cl^−^ > F^−^. However, these

Fluorescence Turn-On Detection of Nitric
Fluorescence Turn-On Detection of Nitric Oxide in Aqueous Solution Using Cationic Conjugated Polyelectrolytes
✍ Chengfen Xing; Minghui Yu; Shu Wang; Zhiqiang Shi; Yuliang Li; Daoben Zhu 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 185 KB

## Abstract A fluorescent turn‐on detection for nitric oxide in aqueous solution is developed using cationic conjugated polymers. The assay benefits from the sensitivity of optical signals from conjugated polymers and the simplicity of fluorescence measurement techniques. The assay contains three e