Optically transparent membrane based on bacterial cellulose/polycaprolactone

AUTOR(ES)

Barud, H. S., Ribeiro, S. J. L., Carone, C. L. P, Ligabue, R., Einloft, Sandra, Queiroz, P. V. S., Borges, A. P. B., Jahno, V. D.

FONTE

Polímeros

DATA DE PUBLICAÇÃO

20/02/2013

RESUMO

Optically transparent membranes from bacterial cellulose (BC)/polycaprolactone (PCL) have been prepared by impregnation of PCL acetone solution into dried BC membranes. UV-Vis measurements showed an increase on transparency in BC/PCL membrane when compared with pristine BC. The good transparency of the BC/PCL can be related to the presence of BC nanofibers associated with deposit of PCL nano-sized spherulites which are smaller than the wavelength of visible light and practically free of light scattering. XRD results show that cellulose type I structure is preserved inside the BC/PCL membrane, while the mechanical properties suggested indicated that PCL acts as a plasticizer for the BC membrane. The novel BC/PCL membrane could be used for preparation of fully biocompatible flexible display and biodegradable food packaging.

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