Cellulose Acetate Based Material with Antibacterial Properties Created by Supercritical Solvent Impregnation

Antibacterial Activity and Conductivity Properties of Nanocomposites based on Cellulose Acetate Nanofibers and Copper Nanoparticles

in this work, nanocomposites comprising copper nanoparticle in cellulose acetate (CA)matrices have been prepared. In this manner, Copper nanoparticles prepared by its saltreduced by sodium borohydride at various concentration. Then this nanoparticle solution wasmixed with polymer solution and electrospun by electrospinning device. The abovenanocomposite has been successfully detected by SEM, ED...

Supercritical solvent impregnation of ophthalmic drugs on chitosan derivatives

Mara E.M. Braga a,∗, Maria T. Vaz Pato a, Hélio S.R. Costa Silva b, Elisabeth I. Ferreira b, Maria H. Gil a, Catarina M.M. Duarte c, Hermı́nio C. de Sousa a a Department of Chemical Engineering, University of Coimbra, Pólo II, Rua Sı́lvio Lima, 3030-790 Coimbra, Portugal b Faculdade de Ciências Farmacêuticas, USP, Av. Professor Lineu Prestes 580, Bloco 13, 05508-900 São Paulo, SP, Brazil c Nutrac...

Micronisation of Ethyl Cellulose by Supercritical Anti-solvent Process

Supercritical Anti-Solvent (SAS) process is considered as a clean technology suitable for particle design, micron or nanometer sized. It is generally used to micronize compounds of interest in mild operating conditions of temperature and nearly without any residual solvent traces in the end-product. By varying the process parameters, the properties of the produced powders can be adjusted with a...

Electrospun porous cellulose acetate fibers from volatile solvent mixture

Supercritical solvent impregnation: A semiquantitative method for the evaluation of affinity between polymers and drugs

A supercritical fluid can be used in substitution of the original organic solvent for the preparation of pharmaceutical forms. The steps involved in the preparation are essentially similar to those of the traditional preparation but in this case the final purification is not required. The interest in the supercritical fluid impregnation of polymeric materials stems from the opportunity to utili...