Thermal characterization of bacterial cellulose-phosphate composite membranes

Cellulose-phosphate composite membranes have been prepared from bacterial cellulose membranes ( BC) and sodium polyphosphate solution. The structure and thermal behavior of the new composites were evaluated by X-ray diffraction (XRD), P-31-nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetry (TG) and thermomechanical analysis (TMA). From XRD analyses the I alpha and I beta cellulose crystalline phases were identified together with crystalline sodium phosphate that covers the cellulose microfibrils as revealed by SEM. P-31 NMR spectra show peaks assigned to Q(0) and Q(1) phosphate structures to be compared to the Q(2) units that characterize the precursor polyphosphate. Glass transition temperature, T-g, obtained from TMA curves and thermal stability obtained from TG and DSC measurements, were observed to be dependent on the phosphate content.

Self-supported bacterial cellulose/boehmite organic-inorganic hybrid films

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Effects of a lectin-like protein isolated from Acacia farnesiana seeds on phytopathogenic bacterial strains and root-knot nematode

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Biopolymer Random Laser Consisting of Rhodamine 6G and Silica Nanoparticles Incorporated to Bacterial Cellulose

We demonstrate random lasing action in a biopolymer that has large potential for medical applications. The novel random laser consists of nanofibers of bacterial cellulose impregnated with silica nanoparticles and Rhodamine 6G.

Structure and properties of conducting bacterial cellulose-polyaniline nanocomposites

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Transparent bacterial cellulose-boehmite-epoxi-siloxane nanocomposites

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Utilisation of bacterial (Rubrivivax gelatinosus) biomass for egg yolk pigmentation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Impact of sewage sludge on the soil bacterial communities by DNA microarray analysis

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)