The effect of adsorbed carboxymethyl cellulose on the cotton fibre adsorption capacity for surfactant

Lidija Fras Zemljič*, Peer Stenius, Janne Laine, Karin Stana Kleinschek

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

The research reported in this paper demonstrates that the capacity of cotton fibres to adsorb cationic surfactants as well as the rate of the adsorption process can be increased by adsorbing carboxymethyl cellulose (CMC) onto the fibre surfaces; in addition, the adsorption can be restricted to the fibre surface. CMC was deposited by means of adsorption from an aqueous solution. The adsorption of N-cetylpyridinium chloride (CPC) from an aqueous solution onto the CMC-modified fibres was measured using UV-spectrometric determination of the surfactant concentration in the solution. Adsorption onto the cotton fibres was studied in a weakly basic environment (pH 8.5) where cotton fibres are negatively charged and the CPC ion is positively charged. Modification of the fibres by adsorption of CMC introduces new carboxyl groups onto the fibre surfaces, thereby increasing the adsorption capacity of the fibres for CPC. The initial rate of adsorption of CPC increased proportionally with the amount of charge; however, this rate slowed down at high degrees of coverage on fibres with a high charge. The adsorption of cationic surfactant to the anionic surface groups was stoichiometric, with no indication of multilayer or admicelle formation. It was evident that the acidic group content of the fibres was the primary factor determining cationic surfactant adsorption to these fibres.
Originalspracheenglisch
Seiten (von - bis)655-663
Seitenumfang9
FachzeitschriftCellulose
Jahrgang13
Ausgabenummer6
DOIs
PublikationsstatusVeröffentlicht - 1 Dez 2006
Extern publiziertJa

ASJC Scopus subject areas

  • !!Polymers and Plastics

Fingerprint Untersuchen Sie die Forschungsthemen von „The effect of adsorbed carboxymethyl cellulose on the cotton fibre adsorption capacity for surfactant“. Zusammen bilden sie einen einzigartigen Fingerprint.

  • Dieses zitieren