title: Wet spinning of fibers made of chitosan and chitin nanofibrils.
abstract: Biocompatible and bioresorbable composite fibers consisting of chitosan filled with anisotropic chitin nanofibrils with the length of 600-800 nm and cross section of about 11-12 nm as revealed by SEM and XRD were prepared by coagulation. Both chitin and chitosan components of the composite fibers displayed preferred orientations. Orientation of chitosan molecules induced by chitin nanocrystallites was confirmed by molecular modeling. The incorporation of 0.1-0.3 wt.% of chitin nanofibrils into chitosan matrix led to an increase in strength and Young modulus of the composite fibers.
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia; Saint-Petersburg Polytechnic University, Polytechnicheskaya ul. 29, Saint-Petersburg, 195251 Russia.
authors.forename: Vladimir E
authors.initials: VE
authors.lastname: Yudin
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia. Electronic address: dobrov@hq.macro.ru.
authors.forename: Irina P
authors.initials: IP
authors.lastname: Dobrovolskaya
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia; Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, Kronverkskiy pr., 49, Saint-Petersburg, 197101 Russia.
authors.forename: Igor M
authors.initials: IM
authors.lastname: Neelov
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia.
authors.forename: Elena N
authors.initials: EN
authors.lastname: Dresvyanina
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia.
authors.forename: Pavel V
authors.initials: PV
authors.lastname: Popryadukhin
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia.
authors.forename: Elena M
authors.initials: EM
authors.lastname: Ivan'kova
authors.affiliation: Institute of Macromolecular Compounds Russian Academy of Sciences, 31 Bolshoy pr. VO, Saint-Petersburg, 199004 Russia.
authors.forename: Vladimir Yu
authors.initials: VY
authors.lastname: Elokhovskii
authors.affiliation: Saint-Petersburg State University, Universitetskaya nab.7-9, Saint-Petersburg, 199034 Russia.
authors.forename: Igor A
authors.initials: IA
authors.lastname: Kasatkin
authors.affiliation: Saint-Petersburg State University, Universitetskaya nab.7-9, Saint-Petersburg, 199034 Russia.
authors.forename: Boris M
authors.initials: BM
authors.lastname: Okrugin
authors.affiliation: Applied Cosmetic Dermatology, II University of Naples, Italy.
authors.forename: Pierfrancesco
authors.initials: P
authors.lastname: Morganti
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D002686:Chitin / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D002686:Chitin; D048271:Chitosan
keywords: Chitin/chitosan; Composite fibers; Modeling; Structure