Topochemical modification of cotton fibres with carboxymethyl cellulose

Lidija Fras Zemljič (Author), Peer Stenius (Author), Janne Laine (Author), Karin Stana-Kleinschek (Author)

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 UVspectrometric 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 amountof charge; however, this rate slowed down at high degrees of coverage onfibres with a high charge. The adsorption of cationic surfactant to the anionic surface groups was stoichiometric, with no indication of multilayer oradmicelle formation. It was evident that the acidic group content of the fibres was the primary factor determining cationic surfactant adsorption to these fibres.

Keywords

tekstilstvo;bombažna vlakna;modifikacija;karboksimetil celuloza;praktična uporaba;adsorpcija CMC;textile fibres;cotton fibres;modification;carboxymethyl cellulose;acid groups;charge increase;conductiometric titration;phenol-sulphuric acid test;practical applications;

Data

Language:	English
Year of publishing:	2008
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	677.21.016
COBISS:	11942166
ISSN:	0969-0239
Views:	1498
Downloads:	90
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary keywords:	tekstilstvo;bombažna vlakna;modifikacija;karboksimetil celuloza;praktična uporaba;adsorpcija CMC;
URN:	URN:SI:UM:
Pages:	str. 315-321
Volume:	ǂVol. ǂ15
Issue:	ǂno ǂ2
Chronology:	Apr. 2008
DOI:	10.1007/s10570-007-9175-3
ID:	8718596