Abstract – Hydrogels have attracted the attention of domestic and foreign researchers due to their outstanding properties such as simple fabrication diverse applications in many fields. In this study, hydrogels were synthesized from polyvinyl alcohol (PVA), chitosan (CS), activated carbon (AC) towards removing copper ions wastewater. The characteristic investigated by analytical methods, includ...

Abstract Thermoresponsive hydrogels based on ionic cellulose/chitosan are widely used various fields, such as smart windows and tissue engineering, while the effect of carbohydrate backbones thermal response mechanical properties has received less attention so far. Herein, poly(2(dimethylamino)ethyl methacrylate) (PDMAEMA)-grafted cellulose sulfate (P-CS) PDMAEMA-grafted chitosan (P-CHS) resear...

In this study, the development and characterization of novel polymer blends based on chitosan-poly (vinyl alcohol) and physically cross-linked by freeze-thaw method for possible use in a variety of biomedical application is reported. The present investigation deals with designing savlon-loaded blend hydrogels (coined as cryogels) of poly (vinyl alcohol) (PVA) and chitosan by repeated freeze-tha...

Introduction Hydrogels are a class of three-dimensional, highly hydrated polymeric networks (1). They are suitable for biomedical applications because of their high tissue compatibility mainly caused by the high water content of the gels (2). Chitosan (CS) (poly[β-(1-4)-2-amino-2-deoxy-Dglucopyranose]) is a non-toxic and biocompatible copolymer of N-glucosamine and N-acetyl-glucosamine produced...

The present work focused on the design of drug delivery system based on an amphiphilic and pH-sensitive hydrogel. The hydrogels were prepared via graft copolymerization of acrylic acid (AA) onto chitosan backbones by a free radical polymerization technique. The structure and surface morphology of the hydrogels were characterized by FTIR and SEM, respectively. The swelling and pH-sensitive prope...

The purpose of this study was designed to investigate the in vitro and in vivo skin absorption of capsaicin and nonivamide from hydrogels. Various commercialized creams of capsaicin were also compared with hydrogels. Both skin stripping technique and Mexameter were applied to evaluate the level of capsaicin and nonivamide retained in stratum corneum (SC) and skin erythema in vivo. The partition...

Abstract In recent years, conductive hydrogels, as an ideal flexible material, have quite broad application prospects in various electronics fields, such supercapacitors, batteries, and sensors. However, mechanical stress stretching, fracture, compression will affect the performance of hydrogel during application, which limits its further application. Polysaccharides, cellulose chitosan, are wi...

• Polyvinyl alcohol/ N –succinyl chitosan/lincomycin antibacterial hydrogels were prepared by the freezing/thrawing method. The swelling behavior, mechanical strength, activity and drug release systematically investigated. –Succinyl chitosan enhanced capacity strength. introducing of lincomycin improved with no cytotoxicity observed. Hydrogels are three-dimensional polymeric networks capable ab...

Chitosan is currently proposed to be one of the most promising polymers in wound dressing development. Our research focuses on its potential as a vehicle for nano-delivery systems destined for burn therapy. One of the most important features of wound dressing is its bioadhesion to the wounded site. We compared the bioadhesive properties of chitosan with those of Carbopol, a synthetic origin pol...

The paper presents the synthesis of hydrogels via free-radical polymerization, based on Chitosan (CS) grafted with Acrylic acid (AA), using a two-step procedure. Free-radical polymerization has given strong compact structure, dominant elastic behavior, and long linear viscoelastic region. results rheological studies have shown that obtained significantly improved mechanical properties in compar...