DIELECTRIC-RELAXATION AND MECHANISMS OF MOLECULAR-INTERACTIONS IN CELLULOSE-UREA MIXTURES

Authors
AFANASEVA NV ZIMINA TR PETROPAVLOVSKII GA BORISOVA TI
Citation
Nv. Afanaseva et al., DIELECTRIC-RELAXATION AND MECHANISMS OF MOLECULAR-INTERACTIONS IN CELLULOSE-UREA MIXTURES, Russian journal of applied chemistry, 68(11), 1995, pp. 1657-1660
Citations number
11
Categorie Soggetti
Chemistry Applied
Journal title
Russian journal of applied chemistry → ACNP
ISSN journal
10704272
Volume
68
Issue
11
Year of publication
1995
Part
2
Pages
1657 - 1660
Database
ISI
SICI code
1070-4272(1995)68:11<1657:DAMOMI>2.0.ZU;2-P
Abstract
Dielectric losses were measured at temperatures from -120 to 70 degree s C and frequencies from 10(3) to 10(6) Hz in mixtures of cellulose wi th urea, which were prepared by various methods. Analysis of the param eters of dielectric relaxation processes indicates the formation of H- bond complexes between urea molecules and primary hydroxy groups of ce llulose. Such complex formation changes the type of hydrogen bonds and several properties connected with them, for example, the solubility.