de Oliveira, Rafael Leite [UNESP]Barud, Hernane da Silva [UNESP]de Assuncao, Rosana M. N.Meireles, Carla da SilvaCarvalho, Geandre OliveiraRodrigues Filho, GuimesMessaddeq, Younes [UNESP]Lima Ribeiro, Sidney Jose [UNESP]2014-05-202014-05-202011-12-01Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 106, n. 3, p. 703-709, 2011.1388-6150http://hdl.handle.net/11449/26009In this study, microcrystalline cellulose (MCC) was prepared from the acid hydrolysis of bacterial cellulose (BC) produced in culture medium of static Acetobacter xylinum. The MCC-BC produced an average particle size between 70 and 90 mu m and a degree of polymerization (DP) of 250. The characterization of samples was performed by thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy (SEM). The MCC shows a lower thermal stability than the pristine cellulose, which was expected due to the decrease in the DP during the hydrolysis process. In addition, from X-ray diffractograms, we observed a change in the crystalline structure. The images of SEM for the BC and MCC show clear differences with modifications of BC fiber structure and production of particles with characteristics similar to commercial MCC.703-709engBacterial celluloseMicrocrystalline celluloseAcetobacter xylinumAcid hydrolysisArtigo10.1007/s10973-011-1449-1WOS:000297371200011Acesso restrito29985038419178156446047463034654