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Effects of carboxyl content on the characteristics of TMP long fibers / Lianshan Mao in Industrial & engineering chemistry research, Vol. 47 n°11 (Juin 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°11 (Juin 2008) . - p. 3809–3812 Titre : Effects of carboxyl content on the characteristics of TMP long fibers Type de document : texte imprimé Auteurs : Lianshan Mao, Auteur ; Kweinam Law, Auteur ; Daneault Claude, Auteur ; Brouillette Francois, Auteur Année de publication : 2008 Article en page(s) : p. 3809–3812 Note générale : Bibliogr. p. 3812 Langues : Anglais (eng) Mots-clés : TMP  long  fibers;  Carboxyl  groups;  Oxidation Résumé : This work examined the effects of carboxyl content on the characteristics of TMP long fibers. The carboxyl groups on TMP long fibers were generated by a TEMPO-mediated oxidation using different amounts of sodium hypochlorite. In general, the increases in carboxyl content improved the tensile and burst indices but reduced the tear index and fines retention. It was also found that low carboxyl content on oxidized long fibers could adsorb part of the dissoluble substance (DS) and other substances, reducing the DS and total organic carbon (TOC) in whitewater; the adsorption capacity decreased with increasing carboxyl content. Addition of cationic polymer increased the retention of fines and decreased the DS and other substances in whitewater. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071274z [article] Effects of carboxyl content on the characteristics of TMP long fibers [texte imprimé] / Lianshan Mao, Auteur ; Kweinam Law, Auteur ; Daneault Claude, Auteur ; Brouillette Francois, Auteur . - 2008 . - p. 3809–3812. Bibliogr. p. 3812 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°11 (Juin 2008) . - p. 3809–3812 Mots-clés : TMP  long  fibers;  Carboxyl  groups;  Oxidation Résumé : This work examined the effects of carboxyl content on the characteristics of TMP long fibers. The carboxyl groups on TMP long fibers were generated by a TEMPO-mediated oxidation using different amounts of sodium hypochlorite. In general, the increases in carboxyl content improved the tensile and burst indices but reduced the tear index and fines retention. It was also found that low carboxyl content on oxidized long fibers could adsorb part of the dissoluble substance (DS) and other substances, reducing the DS and total organic carbon (TOC) in whitewater; the adsorption capacity decreased with increasing carboxyl content. Addition of cationic polymer increased the retention of fines and decreased the DS and other substances in whitewater. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071274z