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N , N ‐Dimethylformamide Additions to the Solution for the Electrospinning of Poly( ε ‐caprolactone) Nanofibers
Author(s) -
Hsu ChenMing,
Shivkumar Satya
Publication year - 2004
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200300224
Subject(s) - electrospinning , materials science , dimethylformamide , nanofiber , polymer , solvent , polymer chemistry , chemical engineering , chloroform , fiber , jet (fluid) , composite material , organic chemistry , chemistry , thermodynamics , engineering , physics
Summary: Additives that exhibit polyelectrolyte behavior such as N , N ‐dimethylformamide (DMF) may improve the electrospinning characteristics of viscoelastic polymer solutions. DMF additions to the solution lead to extensive jet splaying, thereby reducing the fiber diameter significantly. Nanofibrous structures with diameters of the order of 150 nm can be produced by the addition of about 10 vol.‐% DMF to the solvent (chloroform). DMF additions also yield a narrow, unimodal distribution of fibers, compared to the bimodal distribution typically detected in electrospun polymers.Jet breakdown without (left) and with DMF addition to the solution.