Topochemical modification of cotton fibres with carboxymethyl cellulose

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

Povzetek

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.

Ključne besede

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;

Podatki

Jezik:	Angleški jezik
Leto izida:	2008
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	677.21.016
COBISS:	11942166
ISSN:	0969-0239
Št. ogledov:	1498
Št. prenosov:	90
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	tekstilstvo;bombažna vlakna;modifikacija;karboksimetil celuloza;praktična uporaba;adsorpcija CMC;
URN:	URN:SI:UM:
Strani:	str. 315-321
Letnik:	ǂVol. ǂ15
Zvezek:	ǂno ǂ2
Čas izdaje:	Apr. 2008
DOI:	10.1007/s10570-007-9175-3
ID:	8718596