Cellulose-chitosan composite bacterial

Preparation and characterization of a Bacterial cellulose/Chitosan composite for potential biomedical application, 18,... 

Cienchanska, D. Multifunctional bacterial cellulose/chitosan composite materials for medical applications. Fibres Text. East Eur. 12, 69-72 (2004)... 

FIGURE 6.2 Bacterial cellulose—chitosan composite in the initial wet state of the never dried sheets. 

Zhijiang, C., Chengwei, H., Guang, Y., 2012. Preparation and characterization of a bacterial cellulose/chitosan composite for potential biomedical application (vol. 121, pg 1488, 2011) Journal of Applied Polymer Science 126 (6), 2078. 

PVA-C composites are prepared by the additimi of fillers into the PVA solution before the freeze-thaw process. The main purposes of filler addition are for improving mechanical properties and for controlled release and delivery. A wide variety of filler materials that vary in dimensimis from micro- to nanometers have been reported, but here we focus on two widely studied filler materials for their relevance in biomedical applications bacterial cellulose and chitosan. 

A brief overview of composite materials based on cellulose fibers (vegetal cellulose, bacterial cellulose and nanofibrillated cellulose) with other natural polymers such as chitosan and starch will be presented. 

Wang Z, Zhou J, Wang X, Zhang N, Sun X, Ma Z (2014) The effects of ultrasonic/microwave assisted treatment on the water vapor barrier properties of soybean protein isolate-based oleic acid/stearic acid blend edible films. Food Hydrocolloids 35 51-58 Wihodo M, Moraru Cl (2013) Physical and chemical methods used to enhance the structure and mechanical properties of protein films a review. J Food Eng 114(3) 292-302 Woehl MA, Canestraro CD, Mikowski A, Sierakowski MR (2010) Bionanocomposites of thermoplastic starch reinforced with bacterial cellulose nanofibers effect of enzymatic treatment on mechanical properties. Carbohydr Polym 80 866-873 Xu YX, Kim KM, Hanna MA, Nag D (2005) Chitosan-starch composite film preparation and characterization. Ind Crops Prod 21 185-192... 

The first exploratory investigation on the use of bacterial cellulose as a liquid-loaded pad for wound care was performed by Johnson and Johnson in the early 1980s. Bacterial cellulose composites blended with chitosan, polyethylene glycol (PEG), and gelatin were tested for potential biomedical applications, and the products look like a foam in structure. Cell adhesion studies showed that these composite products have a greater biocompatibility than pure bacterial cellulose. 

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