New biphasic mono-component composite material obtained by partial oxypropylation of bacterial cellulose
Nenhuma Miniatura disponível
Data
2014-06-01
Autores
Rosa, Joyce Rover
Vieira da Silva, Ingrid Souza
Marques de Lima, Caroline Stefany
Flauzino Neto, Wilson Pires
Silverio, Hudson Alves
Santos, Daniele Bueno dos [UNESP]
Barud, Hernane da Silva [UNESP]
Lima Ribeiro, Sidney Jose [UNESP]
Pasquini, Daniel
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
The present work evaluates the partial oxypropylation of dried bacterial cellulose (BC) performed by grafting propylene oxide with potassium hydroxide as the catalyst. Samples were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. Partial transformation of BC was observed, with cellulose fibers being covered by the thermoplastic phase, leading to a new biphasic mono-component composite material. This synthesis can be considered a green chemical process, since it does not require the use of solvents nor the application of any processing operation, given the fact that the final product is ready for further exploitation as it is removed from the reactor. The obtained material can be used in various applications in the polymer field, i.e. composites, reinforced rigid polyurethane foams, and others.
Descrição
Palavras-chave
Bacterial cellulose, Composite, Green chemistry, Partial oxypropylation, Thermoplastic polymer
Como citar
Cellulose. Dordrecht: Springer, v. 21, n. 3, p. 1361-1368, 2014.