%0 Journal Article %T Synthesis of cellulose acetate nanofibers and its application in the release of some drugs %J Nanomedicine Research Journal %I Tehran University of Medical Sciences %Z 2476-3489 %A Mehrabi, Fatemeh %A Shamspur, Tayebeh %A Mostafavi, Ali %A Saljooqi, Asma %A Fathirad, Fariba %D 2017 %\ 09/01/2017 %V 2 %N 3 %P 199-207 %! Synthesis of cellulose acetate nanofibers and its application in the release of some drugs %K Drug Delivery %K Controlled release %K Electrospinning %K Coaxial %K Sandwich-method %K cellulose acetate %R 10.22034/nmrj.2017.03.008 %X Objective(s): The purpose of this study was to compare novel sandwich-structured nanofibrous membranes, and coaxial and usual methods, to provide sustained-release delivery of morphine for drug delivery. In this work, synthesis ofnanofibrous cellulose acetate (NFC) was carried out by electrospinning. Methods: A weighed amount of cellulose acetate (CA) powder was dissolved in 3:1 v/v acetone/dimethylformamide (DMF) to obtain a CA solution at a concentration of 8 to16% w/v. Acetaminophen or morphine-loaded CA solutions were prepared by dissolving CA powder and Acetaminophen (A) or morphine in the weight ratio of 5:1, in an acetone/DMF mixture. Under optimum condition, they were electrospun into sandwich structured membranes with the coaxial method and cellulose acetate as the surface layer and cellulose acetate/drugs as the core. Results: Characterization of the radius of fiber is shown as 52.9 ± 0.1nm with scanning electron microscopy (SEM). The full range drug release profiles of nanofibers are shown as 80.7% of the contained drug in 8h. The drug release from nanofiber was controlled through a typical Fickian diffusion mechanism from the cellulose acetate matrix by a release exponent value of 0.24 for conventional nanofiber, 0.35 for coaxial nanofiber and 0.40 (less than 0.45) for sandwich nanofibers. Conclusions: All the cellulose acetate nanofibers showed that they could release large amounts of drugs in vitro for more than one day. However, among these three methods, the best one is a sandwich method because its release is slower than that of the other methods.  %U https://www.nanomedicine-rj.com/article_28005_ecfb88331c70e5969c8c214799d6f48c.pdf