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Preparation of polyurethane nanofibers by electrospinning
Author(s) -
Zhuo Haitao,
Hu Jinlian,
Chen Shaojun,
Yeung Lapyan
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28067
Subject(s) - nanofiber , electrospinning , polyurethane , materials science , chemical engineering , polymer , morphology (biology) , polymer chemistry , dimethylformamide , polymer solution , composite material , chemistry , organic chemistry , solvent , biology , genetics , engineering
Polyurethane (PU) nanofibers were prepared by the electrospinning method. The process parameters, including the applied voltage, feeding rate, and solution concentration, were investigated carefully. The results showed that the resultant nanofibers, electrospun from PU/ N,N ‐dimethylformamide (DMF) solutions, had ultrafine diameters ranging from about 700 to 50 nm. In addition, it was found that the diameters and morphology of the nanofibers were influenced greatly by the process parameters. In particular, the solution concentration played a main role in influencing the transformation of the polymer solution into ultrafine fibers, and the diameters increased with the solution concentrations increasing. Finally, it was concluded that uniform PU nanofibers without beads or curls could be prepared by electrospinning through good control of the process parameters, such as 5.0–7.0 wt % PU/DMF solutions, 10–15‐kV applied voltages, and 0.06–0.08 mm/min feeding rates. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008