Wet cross-linking of cellulose fibers via a bioconjugation reaction / Alvaro Tejado in Industrial & engineering chemistry research, Vol. 50 N° 10 (Mai 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 5907-5913 Titre : Wet cross-linking of cellulose fibers via a bioconjugation reaction Type de document : texte imprimé Auteurs : Alvaro Tejado, Auteur ; Miro Antal, Auteur ; Xiaojun Liu, Auteur Année de publication : 2011 Article en page(s) : pp. 5907-5913 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Cellulose Fiber Résumé : A well-known bioconjugation reaction, the EDC-assisted reaction of carboxyl and amine groups, is shown to be extremely well-adapted for cross-linking fibers under papermaking conditions. By using such chemistry we obtained increases as high as 500% and 100% in the wet-web strength (WWS) of papers made from, respectively, unbeaten and beaten hardwood kraft pulps, after pretreating the fibers with carboxymethyl cellulose and using adipic dihydrazide as the cross-linker. These increments exceed previous attempts in most cases by about 1 order of magnitude. Experiments show that the cross-linking reaction does not counteract the beating effect, as has usually occurred in the past for other cross-linking routes, but instead complements it. The ability ofEDC for promoting covalent bonding under very wet conditions appears to make it an excellent agent for the enhancement of the WWS of paper, the property that ultimately determines the runnability of a papermaking machine. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158886 [article] Wet cross-linking of cellulose fibers via a bioconjugation reaction [texte imprimé] / Alvaro Tejado, Auteur ; Miro Antal, Auteur ; Xiaojun Liu, Auteur . - 2011 . - pp. 5907-5913. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 5907-5913 Mots-clés : Cellulose Fiber Résumé : A well-known bioconjugation reaction, the EDC-assisted reaction of carboxyl and amine groups, is shown to be extremely well-adapted for cross-linking fibers under papermaking conditions. By using such chemistry we obtained increases as high as 500% and 100% in the wet-web strength (WWS) of papers made from, respectively, unbeaten and beaten hardwood kraft pulps, after pretreating the fibers with carboxymethyl cellulose and using adipic dihydrazide as the cross-linker. These increments exceed previous attempts in most cases by about 1 order of magnitude. Experiments show that the cross-linking reaction does not counteract the beating effect, as has usually occurred in the past for other cross-linking routes, but instead complements it. The ability ofEDC for promoting covalent bonding under very wet conditions appears to make it an excellent agent for the enhancement of the WWS of paper, the property that ultimately determines the runnability of a papermaking machine. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158886

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire