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Characterization of Native Cellulose/Poly(ethylene glycol) Films
Author(s) -
Seves Alberto,
Testa Giovanni,
Bonfatti Anna Maria,
Dubini Paglia Ernestina,
Selli Elena,
Marcandalli Bruno
Publication year - 2001
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/1439-2054(20010901)286:9<524::aid-mame524>3.0.co;2-b
Subject(s) - materials science , cellulose , ethylene glycol , differential scanning calorimetry , peg ratio , chemical engineering , polymer , polymer chemistry , supercritical carbon dioxide , supercritical fluid , organic chemistry , composite material , chemistry , physics , finance , engineering , economics , thermodynamics
Water molecules retained in native cellulose gels obtained from Acetobacter xylinum (AX) were displaced by poly(ethylene glycol)s (PEG) of different molecular weight. The so obtained native cellulose/PEG material, characterized in film form by differential scanning calorimetry, dynamic mechanical thermal analysis and wide angle X‐ray scattering, revealed that strong interactions occur between PEG and cellulose and that the polymer mixture is in the rubbery state at ambient temperature. Moreover, it could be dyed in supercritical carbon dioxide by disperse dyes, thus exhibiting typically lipophilic properties and suitability to be employed as a biocompatible support for lipophilic active species.