Bacterial cellulose films with controlled microstructure-mechanical property relationships

A. Retegi, N. Gabilondo, C. Peña, R. Zuluaga, C. Castro, P. Gañan, K. de la Caba, I. Mondragon

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

111 Citas (Scopus)

Resumen

Bacterial cellulose (BC) films with different porosities have been developed in order to obtain improved mechanical properties. After 13 days of incubation of Gluconobacter xylinum bacteria in static culture, BC pellicles have been set. BC films have been compression molded after water dispersion of BC pellicles and filtration by applying different pressures (10, 50, and 100 MPa) to obtain films with different porosities. Tensile behavior has been analyzed in order to discuss the microstructure-property relationships. Compression pressure has been found as an important parameter to control the final mechanical properties of BC films where slightly enhanced tensile strength and deformation at break are obtained increasing mold compression pressure, while modulus also increases following a nearly linear dependence upon film porosity. This behavior is related to the higher densification by increasing mold compression pressure that reduces the interfibrillar space, thus increasing the possibility of interfibrillar bonding zones. Network theories have been applied to relate film elastic properties with individual nanofiber properties.

Idioma originalInglés
Páginas (desde-hasta)661-669
Número de páginas9
PublicaciónCellulose
Volumen17
N.º3
DOI
EstadoPublicada - jun. 2010
Publicado de forma externa

Huella

Profundice en los temas de investigación de 'Bacterial cellulose films with controlled microstructure-mechanical property relationships'. En conjunto forman una huella única.

Citar esto