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Titolo:
Adsorption behaviour of cationic starch on bleached Eucalyptus globulus kraft pulp
Autore:
Mendes, P; Costa, CAV; Silvy, J; Belgacem, MN;
Indirizzi:
Univ Porto, LEPAE, Fac Engn, Dept Chem Engn, P-4099 Oporto, Portugal Univ Porto Oporto Portugal P-4099 ept Chem Engn, P-4099 Oporto, Portugal Univ Beira Interior, Dept Sci & Technol Paper, P-6200 Covilnia, Portugal Univ Beira Interior Covilnia Portugal P-6200 , P-6200 Covilnia, Portugal
Titolo Testata:
APPITA JOURNAL
fascicolo: 1, volume: 54, anno: 2001,
pagine: 45 - 48
SICI:
1038-6807(200101)54:1<45:ABOCSO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBERS; FINES;
Keywords:
cationic starch; bleached kraft pulps; Eucalyptus globulus; adsorption; conductivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Mendes, P Univ Porto, LEPAE, Fac Engn, Dept Chem Engn, P-4099 Oporto, Portugal Univ Porto Oporto Portugal P-4099 ngn, P-4099 Oporto, Portugal
Citazione:
P. Mendes et al., "Adsorption behaviour of cationic starch on bleached Eucalyptus globulus kraft pulp", APPITA J, 54(1), 2001, pp. 45-48

Abstract

This paper deals with the adsorption kinetics of cationic starch (CS) ontothe surface of bleached Eucalyptus globulus kraft pulp fibres. Six cationic starches (CSs), with different degrees of substitution (DSs), namely: 0.017, 0.022, 0.034, 0.047, 0.06 and 0.09, were investigated. Adsorption for all starches studied was found to occur mainly within the first few seconds. The influence of electrical conductivity of the furnishes on the adsorption of CS was also investigated and showed that for all starches studied, adsorption decreased drastically for electrical conductivities between 1 and 10mS/cm. CS retention decreased from 90 to 40% at these high conductivity levels. The adsorption of CS, as a function of starch addition, showed high retention of CS for levels of addition less than 30 mg CS per gram of fibres; above this level the retention efficiency was greatly reduced.

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Documento generato il 02/12/20 alle ore 08:13:47