Abstract
Methylene blue has shown great applicability potential in medical purposes, moreover the environmental legislation is of heavy interest on utilizing agro wastes as a substrate for valuable products. In this respect controlling the release of MB by using agro waste is very essential. In this present work, the route for pulping the Rice straw and further application as a precursor in production of MB-nanocelluloses carriers was assessed. The RS-pulps produced from different pulping reagents (soda in absence and presence of additives, potassium hydroxide-ammonium hydroxide, sulphite and organosolv), were further oxidized with ammonium persulfate. FT-IR spectra, SEM and TGA were examined to evidence the changes occurred in NCs due to loaded by MB. The effective nanocelluloses were those produced from prescreening of RS as well as adding BH and AQ [NC (M- Na 2 O-AQ-BH pulp)] and AcOH organosolv pulps, where they provided 91% and 80 % for MB release, respectively. These values were greater than those reported by many literatures’ dependent on cellulose, nanographene oxide and alginate-based nanoparticles. The data of kinetic release showed that Ritger and Peppas kinetic was the best fitting release model of MB.
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