Adsorption of acrylamide-based copolymers from aqueous solutions on clay granules

Autor:	S. V. Medentsev, A. A. Zhivaev, S. V. Vasil’chenko
Rok vydání:	2012
Předmět:	Acrylate Aqueous solution Surfaces and Interfaces Polymer adsorption Degree of ionization chemistry.chemical_compound Colloid and Surface Chemistry Adsorption chemistry Chemical engineering Ionization Polymer chemistry Copolymer Freundlich equation Physical and Theoretical Chemistry
Zdroj:	Colloid Journal. 74:690-694
ISSN:	1608-3067 1061-933X
DOI:	10.1134/s1061933x12050158
Popis:	The equilibrium adsorption of three samples of high-molecular-mass acrylamide-sodium acrylate copolymers with a degree of ionization of 7–34% from concentrated aqueous solutions on Khvalynsk clay granules with sizes of 1–2 mm is investigated. The adsorption is studied under dynamic conditions in the absence of inorganic electrolytes at an initial concentration of copolymers in the solutions of 2 g/L. It is established that copolymer adsorption decreases with an increase in the content of the adsorbent. Copolymer with a low degree of ionization is adsorbed more intensely than the other samples are. Adsorption curves are described by the Freundlich equation. The parameters of this equation are determined as functions of the initial pH value and the content of charged groups. The influence of the degree of polymer chain ionization on the density of adsorption contacts of macromolecules with the adsorbent surface is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c136d85618622add1847a3a4c0cc54a0 https://doi.org/10.1134/s1061933x12050158 Zobrazit plný text záznamu Plný text ve formátu PDF