Notice "Oxidation and aging of cellulose"

Auteurs
  • Lewin, Menachem
Titre de l'article/du chapitre
Oxidation and aging of cellulose
Titre de la source
Macromolecular Symposia
Volume ou tome
118
Numéro
1
Date de publication
1997
Numéros de page
715-724
ISSN
1521-3900
Langue du texte
English
Résumé
Oxidation of cellulose by chlorine, bromine, hydrogen peroxide and ozone and the functional groups formed are reviewed. The roles of the pH and of the nature of the oxidant in the formation of carboxy- and keto-celluloses are discussed. The relationships between the functional groups, degradation and stability of the celluloses enable to predict the aging and storage behavior of the polymer. The “active” carbonyls are responsible for the peeling reaction and the formation of the yellow chromophore in alkaline solutions as well as for the reversion in color on aging. The nature of the yellow chromophore, its spectra at several pH values, its use for the characterization of cellulose, e.g. the rapid determination of the degree of polymerization and for the estimation of the primary and secondary degradation of the polymer and its stability on storage and aging are discussed. The parallelism between the yellowing and the reversion in color is reviewed.
Établissement d'origine
CCI=ICC
Emplacement du document
CCI=ICC
Rayon ICC
16587
Type d'enregistrement
Abstract
Type de document
Serial
Level Niveau bibliographique
Analytic
Numéro BCIN
458844
Date de modification :