Results 31 to 40 of about 215,768 (310)

Preparations, properties and applications of chitosan based nanofibers fabricated by electrospinning

open access: yeseXPRESS Polymer Letters, 2011
Chitosan is soluble in most acids. The protonation of the amino groups on the chitosan backbone inhibits the electrospinnability of pure chitosan.
doaj   +1 more source

Synthesis, characterization and anticoagulant activity of chitosan derivatives

open access: yesSaudi Pharmaceutical Journal, 2020
Chitosan derivatives are reported as anticoagulants in the literature. This work was undertaken to develop novel chitosan derivatives as anticoagulants.
Mohd. Imran   +3 more
doaj   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

UTILIZATION OF CHITOSAN PREPARED FROM SHRIMP SHELL AS FAT DILUENT [PDF]

open access: yes, 2003
Shrimp shell waste from seafood restaurants and canned shrimp industries is potential to be used as chitosan source. This material contains 18.1% of chitin which could be converted into chitosan through demineralization, deproteination and deacetylation ...
Djaeni, M. (M)   +3 more
core  

Chitosan based hydrogels for transmucosal drug delivery

open access: yes, 2013
The aim of this thesis was the formulation of new chitosan based delivery systems for transmucosal drug administration. Transmucosal routes, such as buccal, vaginal and nasal routes, allow the circumvention of the hepatic first pass metabolism and avoid ...
Abruzzo, Angela <1984>
core   +1 more source

Photoactive Modified Chitosan

open access: yesBiomacromolecules, 2008
A water-soluble polymeric photosensitizer that contains naphthyl chromophores and absorbs light in the near UV region was obtained by modification of chitosan. The excitation energy can be used to induce photochemical reactions via energy and electron transfer.
Nowakowska, Maria   +2 more
openaire   +3 more sources

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

Autoclaving Achieves pH-Neutralization, Hydrogelation, and Sterilization of Chitosan Hydrogels in One Step

open access: yesMacromol
Conventionally, chitosan hydrogels are acidic and contain toxic chemicals because chitosan is soluble only in acidic solvents and requires toxic additives such as chemical crosslinkers and polymerization agents to fabricate chitosan hydrogels.
Yusuke Yamashita   +3 more
doaj   +1 more source

Derivation of composites of chitosan-nanoparticles from crustaceans source for nanomedicine: A mini review

open access: yesBiomedical Engineering Advances, 2022
Chitosan nanoparticles are promising polymeric and bio-based nanoparticles that have considerably gained a lot of interest in recent years due to their potential applications. They have significant promise as nanocarriers, which may encapsulate molecules
Dare Victor Abere   +3 more
doaj   +1 more source

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