Producing PVP Nanofibers by Electrospinning in N2

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Abstract:

Electrospinning combined with nonsolvent-induced phase separation is a simple and novel method to produce porous nanofibers. In the study, Poly (vinylpyrrolidone) (PVP) nanofibers were fabricated using an electrospinning approach complemented by compressed nitrogen (N). N2 was used as the nonsolvent of choice. Besides, the tun2ning of N2 pressure and temperature can impact the nanofibers’ morphologies by altering phase behavior and mass transfer. Also, the other parameters affecting electrospinning of polymer solution were discussed. The results were demonstrated by extending the technique to PVP/dichloromethane (DCM) and PVP/ethanol (EtOH) systems. And the binary phase equilibrium of solvents (dichloromethane or ethanol) and N simulated by ASPEN PLUS 2006 demonstrates that N is not a 2good choice for producing hollow or po2rous polymer nanofibers.

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Periodical:

Advanced Materials Research (Volumes 560-561)

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701-708

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Online since:

August 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Z.M. Huang, Y.Z. Zhang, M. Kotaki, S. Ramakrishna: A review on polymer nanofibers by electrospinning and their applications in nanocomposites, Composites Science and Technology, 63 (2003) 2223-2253.

DOI: 10.1016/s0266-3538(03)00178-7

Google Scholar

[2] D.H. Reneker, A.L. Yarin, E. Zussman, H. Xu, Electrospinning of nanofibers from polymer solutions and melts, Advances in Applied Mechanics, 41 (2007) 43-195, 345-346.

DOI: 10.1016/s0065-2156(07)41002-x

Google Scholar

[3] P. Lu, B. Ding, Applications of electrospun fibers, Recent Pat Nanotechnol, 2 (2003) 169-182.

Google Scholar

[4] N. Bhardwaj, S.C. Kundu, Electrospinning: a fascinating fiber fabrication technique, Biotechnology Advances, 28 (2010) 325-347.

DOI: 10.1016/j.biotechadv.2010.01.004

Google Scholar

[5] S. Ramakrishna, K. Fujihara, W.E. Teo, T.C. Lim, Z. Ma, An introduction to electrospinning and nanofibers, Journal of Engineered Fibers and Fabrics, 3 (2008) 46-47.

Google Scholar

[6] C. Mit-Uppatham, M. Nithitanakul, P. Supaphol, Effects of solution concentration, emitting electrode polarity, solvent type, and salt addition on electrospun polyamide-6 fibers: a preliminary report, Macromolecular Symposia, 216 (2004) 293-299.

DOI: 10.1002/masy.200451227

Google Scholar

[7] K. Fischer, M. Wilken, Experimental determination of oxygen and nitrogen solubility in organic solvents up to 10 MPa at temperatures between 298 K and 398 K, Journal of Chemical Thermodynamics, 33 (2001)1285-1308.

DOI: 10.1006/jcht.2001.0837

Google Scholar

[8] I. Tsivintzelis, D. Missopolinou, K. Kalogiannis, C. Panayiotou, Phase compositions and saturated densities for the binary systems of carbon dioxide with ethanol and dichloromethane, Fluid Phase Equilibria, 224 (2004) 89-96.

DOI: 10.1016/j.fluid.2004.06.046

Google Scholar

[9] Z.H. Shen, B.E. Thompson, M.A. McHugh, Electrospinning in near-critical CO2, Macromolecules, 39(2006) 8553–8555.

DOI: 10.1021/ma062155i

Google Scholar