Preparation of New Biocompatible systems based on Cellulose Nanowhisker Core and Hyperbranched Poly Glycrol Shell

Currently, biobased materials are an important global research topic as there is a genuine interest and need to decrease society’s dependency on petroleum based products. Celluloseis the most abundant natural polymer found in nature and considerable interest has been recently focused on finding newmaterial applications for this biopolymer [1,2]. One of these applications has been the development of cellulose nanocrystals [3]. It is well known that native cellulose, whensubjected to strong acid hydrolysis, can be readily hydrolyzed to micro or nanocrystalline cellulose. Furthermore In recentyears Cellulose nanowishkers (CNW) have attracted a great deal of attention in the nanocomposites field by reason of theirappealing intrinsic properties. But the use of this nanowiskers in biological environments is restricted due to their low solubility in aqueous media. The free abundant hydroxylgroups on the surface of cellulose nanowishker are suitable for chemical modification and therefore the aim of the presentstudy is chemical modification of cellulose nanowhiskers via anionic ring opening graft polymerization of Glycidol. Glycidol (2,3-epoxypropanol-1) is an oxirane containing ahydroxyl group and polyglycerol is a highly water soluble and biocompatible polymer that widely used in many applications such as drug delivery systems [4].