Characterization of purified bacterial cellulose focused on its use on paper restoration

Bacterial cellulose (BC) synthesized by Gluconacetobacter sucrofermentans CECT 7291 seems to be a good option for the restoration of degraded paper. In this work BC layers are cultivated and purified by two different methods an alkaline treatment when the culture media contains ethanol and a thermal treatment if the media is free from ethanol. The main goal of these tests was the characterization of BC layers measured in terms of tear and burst indexes, optical properties, SEM, X-ray diffraction, FTIR, degree of polymerization, static and dynamic contact angles, and mercury intrusion porosimetry. The BC layers were also evaluated in the same terms after an aging treatment. Results showed that BC has got high crystallinity index, low internal porosity, good mechanical properties and high stability over time, especially when purified by the alkaline treatment. These features make BC an adequate candidate for degraded paper reinforcement. © 2014 Elsevier Ltd.

Bibliographic Details

Main Authors:	Santos De Dios, S. María, Carbajo, J. M., Quintana, E., Ibarra Trejo, David, Gómez, N., Ladero, M., Eugenio Martín, María Eugenia, Villar, J. C.
Format:	journal article biblioteca
Language:	English
Published:	Elsevier 2015
Subjects:	Bacterial cellulose, Characterization, Purification, Paper restoration, Aging,
Online Access:	http://hdl.handle.net/20.500.12792/4219 http://hdl.handle.net/10261/293301
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