Now showing items 1-10 of 1873
SYNTHESIS AND CHARACTERIZATION OF NEW CHITOSAN-O-ETHYL PHOSPHONATE
(Sociedad Chilena de Química, 2005)
Determination of the degree of substitution of modified chitosan by cyclic voltammetry at water/dichloroethane interface
The electrochemical behavior of the cationic polymer chitosan-gtmac (Ch-GTMAC), at the polarized water / 1,2-dichloroethane interface was studied. This polymer was obtained by nucleophilic reaction of chitosan (Ch) with ...
Poly(ethylene glycol) and Cyclodextrin-Grafted Chitosan: From Methodologies to Preparation and Potential Biotechnological Applications
(Frontiers Media Sa, 2017-11-07)
Chitosan, a polyaminosaccharide obtained by alkaline deacetylation of chitin, possesses useful properties including biodegradability, biocompatibility, low toxicity, and good miscibility with other polymers. It is extensively ...
Chitosan-Grafted Copolymers and Chitosan-Ligand Conjugates as Matrices for Pulmonary Drug Delivery
(Hindawi Publishing Corporation, 2011-10)
Recently, much attention has been given to pulmonary drug delivery by means of nanosized systems to treat both local and systemic diseases. Among the differentmaterials used for the production of nanocarriers, chitosan ...
WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
(Sociedad Chilena de Química, 2004)
Thermal studies of chitin-chitosan derivatives
New poly(azo) amino-chitosan compounds were obtained from the azo coupling reaction of N-benzyl chitosan and diazonium salts. The thermal behavior of these compounds was studied by thermogravimetric analysis (TG), differential ...
An overview of carboxymethyl derivatives of chitosan: Their use as biomaterials and drug delivery systems
Chitin is one of the most abundant natural polymers in the world and is used for the production of chitosan by deacetylation. Chitosan is nontoxic and biodegradable and, therefore, can be used as a biomaterial and for the ...
3(2) Factorial design and response surface analysis optimization of N-carboxybutylchitosan synthesis
(Elsevier Sci LtdOxfordInglaterra, 2005)
Impedance spectroscopy study of dehydrated chitosan and chitosan containing LiClO4
(Elsevier B.V., 2010-11-01)
Cast films of chitosan and chitosan containing LiClO4 were characterized using Fourier transform infrared spectroscopy and the thermogravimetric technique. The electric properties of hydrated and dehydrated films were ...
Thermal and morphological study of chitosan metal complexes
The synthesis of chitosan Schiff bases, N-benzylidene chitosan (CTB), 4-dimethylamino-benzylidene chitosan (CTDB) and 4-nitro-benzylidene chitosan (CTNB), and their interaction with Cu2+, Zn2+ and Ni2+ were studied. The ...