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
Citations
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Journal ArticleDOI
Description of a new surface morphology for chitin extracted from wings of cockroach (Periplaneta americana).
Murat Kaya,Talat Baran +1 more
TL;DR: The surface of the chitin, examined with environmental scanning electron microscopy (ESEM), only has oval nanopores (230-510 nm) without nanofibers, and this is different from the above mentioned surface morphologies.
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The effect of solvent composition on grafting gallic acid onto chitosan via carbodiimide.
TL;DR: Investigation of the effect of ethanol (EtOH) concentration on efficiency of grafting GA onto chitosan in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC)/N-hydroxysuccinimides (NHS) showed that EtOH inhibited grafting of GA by prohibiting the production of the intermediate - NHS ester.
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Preparation of biocompatible chitosan grafted poly(lactic acid) nanoparticles.
TL;DR: Of the three methods investigated, diafiltration combined with ultrasonication method produced nanoparticles with optimal property in terms of size and morphology, with size ranging from 133 to 352 nm and zeta potential from 36 to 43 mV.
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Crosslinked, electrospun chitosan–poly(ethylene oxide) nanofiber mats
TL;DR: In this paper, a chitosan-poly(ethylene oxide) copolymer blend was electrospun and crosslinked with glutaraldehyde (GA) for various time periods.
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Use of chitosan as an antifouling agent in a membrane bioreactor
TL;DR: It was found that higher and stabilised flow rates for extended periods of time were obtained in the presence of chitosan, and it was shown that by increasing the flow rate a decrease in the percentage of enantiomeric excess of the substrate and an increase in the Percentage of en Anti-O157 of the product was obtained.
References
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Encyclopedia of polymer science and engineering
TL;DR: In this paper, the authors describe a chain transfer characterisation of polymers charge-transfer complexes, charge transfer complexes and charge transfer complexes of charge transfer and charge-Transfer complexes.
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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
Ruxandra Gref,Yoshiharu Minamitake,Maria Teresa Peracchia,Vladimir S. Trubetskoy,Vladimir P. Torchilin,Robert Langer +5 more
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.