Hydrophilic non-wovens made of cross-linked fully-hydrolyzed poly(vinyl alcohol) electrospun nanofibers

Fully-hydrolyzed poly (vinyl alcohol) (PVA) nanofibers were successfully electrospun from aqueous solutions of PVA in the presence of acetic acid. A continuous spinning of uniform PVA nanofibers proceeded by the addition of acetic acid due to the changes of electronic conductivity and surface tensio...

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Bibliographic Details
Published in:Polymer (Guilford) 2013-01, Vol.54 (1), p.120-126
Main Authors: Gao, Qiang, Takizawa, Junko, Kimura, Mutsumi
Format: Article
Language:English
Subjects:
acetic acid
alcohols
Applied sciences
aqueous solutions
Cross-linked poly(vinyl alcohol) nanofiber
crosslinking
Electrospinning
Exact sciences and technology
Fibers and threads
Forms of application and semi-finished materials
heat treatment
magnetite
nanofibers
Nonwoven
Polymer industry, paints, wood
polymers
spinning
surface tension
Technology of polymers
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Summary:Fully-hydrolyzed poly (vinyl alcohol) (PVA) nanofibers were successfully electrospun from aqueous solutions of PVA in the presence of acetic acid. A continuous spinning of uniform PVA nanofibers proceeded by the addition of acetic acid due to the changes of electronic conductivity and surface tension of aqueous solution of PVA. When cross-linking agent 1 was added to aqueous solution of PVA and subsequent thermal treatment of as-spun nanofibers, chemically cross-linked PVA nanofibers were achieved to resist disintegration in contact with hot water and the tensile mechanical property of nanofiber non-wovens was greatly improved by the formation of cross-linking points. Magnetite was deposited uniformly onto the hydrophilic surface of cross-linked PVA nanofibers and the resulted nanofibers decorated with magnetite showed a magnetic responsiveness. The deposition of magnetite on the PVA nanofibers can generate self-standing magnetic non-wovens. [Display omitted]
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2012.11.022