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AFM Studies of Chitosan, Gold‐Chitosan, and Silver‐Chitosan Films Morphology
Macromolecular Symposia, 2020AbstractAtomic force microscopy is used in this work as a primary tool for investigating chitosan‐based films morphology. Chitosan films casted from chitosan solutions in acetic acid of various concentrations, as well as gold‐ and silver‐containing chitosan films, are studied.
Alexander Yu. Vasil’kov +2 more
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European Journal of Pharmaceutics and Biopharmaceutics, 2004
The derivatization of the primary amino groups of chitosan with coupling reagents bearing thiol functions leads to the formation of thiolated chitosans. So far, three types of thiolated chitosans have been generated: chitosan-cysteine conjugates, chitosan-thioglycolic acid conjugates and chitosan-4-thio-butyl-amidine conjugates.
Margit Hornof +2 more
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The derivatization of the primary amino groups of chitosan with coupling reagents bearing thiol functions leads to the formation of thiolated chitosans. So far, three types of thiolated chitosans have been generated: chitosan-cysteine conjugates, chitosan-thioglycolic acid conjugates and chitosan-4-thio-butyl-amidine conjugates.
Margit Hornof +2 more
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Journal of Biomedical Materials Research, 1998
Chitosan has potential biomedical applications that may require the final products to be sterilized before use. The gamma irradiation of purified and highly deacetylated chitosan fibers and films at sterilizing doses (up to 25 kGy) caused main chain scissions.
Lim, L.-Y., Khor, E., Koo, O.
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Chitosan has potential biomedical applications that may require the final products to be sterilized before use. The gamma irradiation of purified and highly deacetylated chitosan fibers and films at sterilizing doses (up to 25 kGy) caused main chain scissions.
Lim, L.-Y., Khor, E., Koo, O.
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Application of chitosan and chitosan derivatives as biomaterials
Journal of Industrial and Engineering Chemistry, 2016Abstract Chitosan is a linear polysaccharide composed of randomly distributed β-(1-4)-linked d -glucosamine and N-acetyl- d -glucosamine. It is one of the major cationic polymers and the second most abundant polysaccharides in nature. It is extensively used to the biomedical and the industrial fields. Specially, chitosan has been studied much in the
Changyong Choi +2 more
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Antibacterial action of chitosan and carboxymethylated chitosan
Journal of Applied Polymer Science, 2000A series of chitosan with different molecular weights obtained by γ-irradiation depolymerization and another series of deacetylated chitosan were synthesized. Several N,O-carboxymethylated chitosan and O-carboxymethylated chitosan were also produced. The above samples were characterized by Fourier transform infrared spectroscopy (FTIR).
Xiaofei Liu +4 more
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Antifungal properties of Schiff bases of chitosan, N-substituted chitosan and quaternized chitosan
Carbohydrate Research, 2007Schiff bases of chitosan, N-substituted chitosan, and quaternized chitosan were synthesized and their antifungal properties were analyzed against Botrytis cinerea Pers. (B. cinerea pers.) and Colletotrichum lagenarium (Pass) Ell.et halst (C. lagenarium (Pass) Ell.et halst) based on the method of D. Jasso de Rodríguez and co-workers.
Pengcheng Li +6 more
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Chemical Communications, 2012
The imine-bond formation on chitosan backbones occurs with very low yields in aqueous solutions and is significantly improved in hydrogels or in solid state films. The dynamic exchanges of imino-R groups and colour transfer can occur at the interfaces between various hydrogels and solid state films.
Marin, Luminita +2 more
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The imine-bond formation on chitosan backbones occurs with very low yields in aqueous solutions and is significantly improved in hydrogels or in solid state films. The dynamic exchanges of imino-R groups and colour transfer can occur at the interfaces between various hydrogels and solid state films.
Marin, Luminita +2 more
openaire +4 more sources
Antimicrobial Properties of Chitosan and Chitosan Derivatives
2016The investigations of chitosan as an antimicrobial substance came into focus in the 1990s. The number of publications on this topic has been rapidly increasing since then, with more than 2,500 papers published in 2020. Initially, the interest was mainly related to potential applications in agriculture and food products, but currently, the emphasis on ...
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2011
Chitosan is a linear copolymer of d-glucosamine and N-acetyl d-glucosamine in a β-(1-4) linkage, in which glucosamine is the predominant repeating unit. It is easily processed into films, 3D-scaffolds, nanofibers, and nanoparticles. It forms polyelectrolyte complexes with polysacharides, polyamino acids, proteins, and glycosoaminoglycans (GAGs). Its
Ana Paula Pêgo +2 more
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Chitosan is a linear copolymer of d-glucosamine and N-acetyl d-glucosamine in a β-(1-4) linkage, in which glucosamine is the predominant repeating unit. It is easily processed into films, 3D-scaffolds, nanofibers, and nanoparticles. It forms polyelectrolyte complexes with polysacharides, polyamino acids, proteins, and glycosoaminoglycans (GAGs). Its
Ana Paula Pêgo +2 more
openaire +2 more sources