Optically transparent membrane based on bacterial cellulose/polycaprolactone

Abstract

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.

Bacterial cellulose and bacterial cellulose/polycaprolactone composite as tissue substitutes in rabbits' cornea

“…2G); however, the absence of pores (Barud et al 2013) limited cell migration, and therefore, no fibroplasia inside implants, which could suggest the prolonged stay of these implants in corneal tissue. In this period, we also observed inflammatory edema between the stroma and the biomaterial (Fig.2E), mainly in animals with higher inflammation degree.…”

“…The membranes were prepared using bacterial cellulose (BC) and polycaprolactone associated with bacterial cellulose (BC/ PCL), as described by Barud et al (2013). They were cut into a circular shape having 8 mm diameter and sterilized by gamma radiation (20 KGV).…”

“…The PCL is a thermoplastic, biodegradable and biocompatible polymer (Pok et al 2010), also having viscoelasticity (Duling et al 2008). The bacterial cellulose/ polycaprolactone (BC /PCL) composite formed more malleable membranes with high transparency (transmittance 85%) when compared with pure BC membranes (Barud et al 2013) and its biocompatibility has been shown (Grobelski et al 2014). Thus, the objective of this study was to evaluate in vivo the ability of two membranes, BC/PCL and BC, in regenerating superficial corneal ulcers in rabbits with the hypothesis that these membranes are biocompatible and integrated into the cornea, favoring epithelialisation, and therefore the regeneration of experimental ulcers.…”

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

“…Due to its properties BC can be used in nature, like nanocrystals form or associated with other natural or synthetic polymers to obtain biodegradable materials [15,16] .…”

Wettability and Morphological Characterization of a Polymeric Bacterial Cellulose / corn Starch Membrane

“…The bacterial cellulose (BC) is produced by the biosynthesis of the bacteria Acetobacter Xylinum, which is gram negative, rod-shaped and aerobic [20][21][22][23] . Chemically, BC is a linear polysaccharide which structural unity is cellobiose.…”