Hydrogel and bacterial cellulose mats behavior with calcium phosphate deposition.

Abstract

Event Abstract Back to Event Hydrogel and bacterial cellulose mats behavior with calcium phosphate deposition. Paula Braga Daltro1, Gildásio De Cerqueira Daltro2, Gabriel Molina De Olyveira1, Pierre Basmaji3 and Antônio Carlos Guastaldi1 1 IQ-UNESP/Brazil, Department of Physical Chemistry, Brazil 2 UFBA, College Hospital Complex Prof. Edgard Santos (COM-HUPES), Brazil 3 Innovatec's - Biotechnology Research and Development, Biotechnology Research and Development, Brazil Bacterial cellulose (BC) has become established as a remarkably versatile biomaterial and can be used in a wide variety of applied scientific applications, especially for medical devices . Although it’s hydrogel form is it’s natural form, the dehydrated membrane has been focus in research worldwide. This work aims to compare the differences in both bacterial cellulose conditions related of calcium phosphate deposition. Kokubo’s methodology based on a simulated body fluid(SBF) to mimic the calcium phosphate in the blood was used for incorporation of calcium phosphate in Bacterial cellulose. Thermal Analysis, Scanning Electron microscopy, and X-ray diffraction were used to better note the differences between the previously water stateted BC and the dry up state.Thermal analysis show considerable discrepancies when exposed to a heating increase of 10°C/min. A difference is also noted in DSC with the amount of heat injected to the samples. SEM shows a different fiber organization where the hydrogel has closer fibers than the dry membrane. X-ray diffraction shows higher differences in crystallinity, bacterial cellulose mats clearly is amorphous while hydrogel show much clearer peaks and better calcium phosphate phase definition. UNESP-IQ-Chemistry Institute; Innovatec´s-Biotechnology Research and Development.