biomedical exploitation of chitin and chitosan via mechano-chemical disassembly, electrospinning, dissolution？in imidazolium ionic liquids, and supercritical drying生物医学利用甲壳素和壳聚糖通过mechano-chemical拆卸,电纺的,解散 imidazolium离子液体和超临界干燥.pdfVIP

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biomedical exploitation of chitin and chitosan via mechano-chemical disassembly, electrospinning, dissolution？in imidazolium ionic liquids, and supercritical drying生物医学利用甲壳素和壳聚糖通过mechano-chemical拆卸,电纺的,解散 imidazolium离子液体和超临界干燥.pdf

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biomedical exploitation of chitin and chitosan via mechano-chemical disassembly, electrospinning, dissolution？in imidazolium ionic liquids, and supercritical drying生物医学利用甲壳素和壳聚糖通过mechano-chemical拆卸,电纺的,解散 imidazolium离子液体和超临界干燥

Mar. Drugs 2011, 9, 1510-1533; doi:10.3390/md9091510 OPEN ACCESS Marine Drugs ISSN 1660-3397 /journal/marinedrugs Review Biomedical Exploitation of Chitin and Chitosan via Mechano-Chemical Disassembly, Electrospinning, Dissolution in Imidazolium Ionic Liquids, and Supercritical Drying Riccardo A. A. Muzzarelli University of Ancona, IT-60100 Ancona, Italy; E-Mail: Muzzarelli.raa@gmail.it; Tel./Fax: +39-071-36206. Received: 26 July 2011; in revised form: 28 August 2011 / Accepted: 31 August 2011 / Published: 9 September 2011 Abstract: Recently developed technology permits to optimize simultaneously surface area, porosity, density, rigidity and surface morphology of chitin-derived materials of biomedical interest. Safe and ecofriendly disassembly of chitin has superseded the dangerous acid hydrolysis and provides higher yields and scaling-up possibilities: the chitosan nanofibrils are finding applications in reinforced bone scaffolds and composite dressings for dermal wounds. Electrospun chitosan nanofibers, in the form of biocompatible thin mats and non-wovens, are being actively studied: composites of gelatin + chitosan + polyurethane have been proposed for cardiac valves and for nerve conduits; fibers are also manufactured from electrospun particles that self-assemble during subsequent freeze-drying. Ionic liquids (salts of alkylated imidazolium) are suitable as non-aqueous solvents that permit desirable reacti