This work was aimed at preparing and evaluating a physically crosslinked hydrogel for the controlled release of diverse drugs to the distal intestine. A solution of fluorescein isothiocyanate dextran, MW 4400 Da (FD4), or a dispersion of micronized dexamethasone (DMS) was microencapsulated into a PEC hydrogel, composed of polycationic N-trimethyl chitosan (TMC) and polyanionic N-carboxymethyl c...

In this study, a chitosan co-polymer scaffold was prepared by mixing poly(vinyl alcohol) (PVA), NO, carboxymethyl chitosan (NOCC) and polyethylene glycol (PEG) solutions to obtain desirable properties for chondrocyte cultivation. Electron beam (e-beam) radiation was used to physically cross-link these polymers at different doses (30 kGy and 50 kGy). The co-polymers were then lyophilized to form...

The adsorption of human immunoglobulin G (hIgG) and bovine serum albumin (BSA) on cellulose supports were investigated. The dynamics and extent of related adsorption processes were monitored by surface plasmon resonance (SPR) and quartz crystal microbalance with dissipation monitoring (QCM-D). Amine groups were installed on the cellulose substrate by adsorption of chitosan from aqueous solution...

Active films based on carboxymethyl chitosan incorporated corn peptide were developed, and the effect of concentration was evaluated. Physicochemical properties films, including thickness, opacity, moisture content, color, mechanical properties, water vapor permeability, oil resistance, measured. Biological activities antioxidant antibacterial activities, characterized in terms 2, 2-diphenyl-1-...

This research concerns the synthesis of two carboxymethyl chitosan (CMCs) complexes with Cu(II) and Ni(II). The synthesized were characterized using (FT-IR) showing absorption peaks in region (566 cm-1) which belongs to bonds [Cu(CMCs)2] (580 Ni(II) [Ni(CMCs)2]. Molar conductivity was determined for both [Ni(CMCs)2] results showed that these non-electrolytes . UV-visible has been also recorded ...

Background: Through combining two synthetic and natural polymers, scaffolds can be developed for tissue engineering and regenerative medicine purposes. Methods: In this work, carboxymethyl chitosan (CMC; 20%) was grafted to Polycaprolactone (PCL) nanofibers using the cold atmospheric plasma of helium. The PCL scaffolds were exposed to CAP, and functional groups were developed on the PCL surface...

Abstract Using the starting reactants of Zn(OAc) 2 and 2-mercaptonicotinic acid (H L), we successfully synthesized a fresh Zn( ii ) compound, that is, [Zn 3 (L) ] n (1), under hydrothermal conditions then loaded with atenolol. Hualuronic acid/carboxymethyl chitosan hydrogels atenolol drug metal–organic framework were prepared based on chemical synthesis method. The microscopic morphology was in...