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Electrospun Hybrid Nanofibers Based on Chitosan or N ‐Carboxyethylchitosan and Silver Nanoparticles
Author(s) -
Penchev Hristo,
Paneva Dilyana,
Manolova Nevena,
Rashkov Iliya
Publication year - 2009
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.200900003
Subject(s) - electrospinning , nanofiber , chitosan , silver nanoparticle , chemical engineering , polymer chemistry , ethylene oxide , nanoparticle , chemistry , spinning , fiber , contact angle , materials science , nuclear chemistry , nanotechnology , polymer , organic chemistry , copolymer , engineering
Hybrid nanofibers from chitosan or N ‐carboxyethylchitosan (CECh) and silver nanoparticles (AgNPs) were prepared by electrospinning using HCOOH as a solvent. AgNPs were synthesized in situ in the spinning solution. HCOOH slowed down the cross‐linking of the polysaccharides with GA enabling the reactive electrospinning in the presence of poly(ethylene oxide) (PEO). EDX analyses showed that AgNPs are uniformly dispersed in the nanofibers. Since AgNPs hampered the cross‐linking of chitosan and CECh with GA in the hybrid fibers, the imparting of water insolubility to the fibers was achieved at a second stage using GA vapors. The surface of chitosan/PEO/AgNPs nanofibers was enriched in chitosan and 15 wt.‐% of the incorporated AgNPs were on the fiber surface as evidenced by XPS.