Journal ArticleDOI
A review of chitin and chitosan applications
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TLDR
Chitin is the most abundant natural amino polysaccharide and is estimated to be produced annually almost as much as cellulose, and recent progress in chitin chemistry is quite noteworthy as mentioned in this paper.Abstract:
Chitin is the most abundant natural amino polysaccharide and is estimated to be produced annually almost as much as cellulose. It has become of great interest not only as an underutilized resource, but also as a new functional material of high potential in various fields, and recent progress in chitin chemistry is quite noteworthy. The purpose of this review is to take a closer look at chitin and chitosan applications. Based on current research and existing products, some new and futuristic approaches in this fascinating area are thoroughly discussed.read more
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Ceric ammonium nitrate induced grafting of polyacrylamide onto carboxymethyl chitosan
Jigar M. Joshi,Vijay Kumar Sinha +1 more
TL;DR: In this paper, O-Carboxymethyl chitosan (CMCH) was prepared and characterized by FTIR spectroscopy and X-ray diffraction, and grafting of acrylamide (Am) onto CMCH using ceric ammonium nitrate (CAN) as an initiator was carried out under nitrogen atmosphere in aqueous solution.
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The sensing mechanism and detection of low concentration acetone using chitosan-based sensors
Tulus Ikhsan Nasution,Tulus Ikhsan Nasution,Irwana Nainggolan,Sabar D. Hutagalung,Khairel Rafezi Ahmad,Zainal Arifin Ahmad +5 more
TL;DR: In this paper, the use of chitosan film sensors to detect acetone concentrations in human breath, in order to precisely diagnose diabetes mellitus in patients, was discussed, and the results suggested that the proposed acetone-based gas sensor can operate at room temperature with a high performance demonstrated by good response, recovery, stability and repeatability.
Journal ArticleDOI
The Role of Chitosan in Emulsion Formation and Stabilization
TL;DR: In this article, the basic principles of emulsion formation and stabilization through the electrosteric function of chitosan are reviewed, which is a polycationic biopolymer, which may act as an emulsifier and emulsion stabilizer through adsorption of the protective layer at oil-water interfaces, viscosity enhancement, and interaction with surfaceactive agents (e.g., surfactants, proteins, and polysaccharides).
Journal ArticleDOI
Nanocarriers for Cytoplasmic Delivery: Cellular Uptake and Intracellular Fate of Chitosan and Hyaluronic Acid-Coated Chitosan Nanoparticles in a Phagocytic Cell Model
TL;DR: The surface decoration with HA profoundly influences the kinetics of cellular uptake, with an at least two orders of magnitude slower kinetics, but also the nature of the binding on the cellular surface.
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Degree of deacetylation of chitosan by infrared spectroscopy and partial least squares.
TL;DR: IR-PLS results were found to be more precise and rugged compared to the usual IR absorbance ratio method, consistent with the fact that IR spectral resolution is not really high and that the absorption at a single wavelength is influenced by other factors like hydrogen bonding and the presence of water.
References
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Encyclopedia of polymer science and engineering
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A simple equation for description of solute release I. Fickian and non-fickian release from non-swellable devices in the form of slabs, spheres, cylinders or discs
TL;DR: In this paper, a simple exponential relation Mt/M∞ = ktn is introduced to describe the general solute release behavior of controlled release polymeric devices, where Mt is the fractional release, t is the release time, k is a constant, and n is the diffusional exponent characteristic of the release mechanism.
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Biodegradable long-circulating polymeric nanospheres
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TL;DR: Monodisperse biodegradable nanospheres were developed from amphiphilic copolymers composed of two biocompatible blocks and exhibited dramatically increased blood circulation times and reduced liver accumulation in mice.
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Polymeric Systems for Controlled Drug Release
TL;DR: Kevin Shakesheff investigates new methods of engineering polymer surfaces and the application of these engineered materials in drug delivery and tissue engineering.
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Novel hydrophilic chitosan-polyethylene oxide nanoparticles as protein carriers
TL;DR: In this paper, a new approach for the preparation of nanoparticles made solely of hydrophilic polymers is presented, based on an ionic gelation process, is extremely mild and involves the mixture of two aqueous phases at room temperature.