NDLI: Nonafiber Membrane of EVOH-Based Ionomer by Electrospinning

Content Provider	IEEE Xplore Digital Library
Author	Wei-Zhu Jin Hong-Wei Duan Yu-Jun Zhang Feng-Fu Li
Copyright Year	2006
Description	Author affiliation: Coll. of Electromech. Eng., Northeast forestry Univ. (Wei-Zhu Jin; Hong-Wei Duan)
Abstract	Electrospinning is a straightforward and effective technique to produce nanofiber nonwovens. In this paper, a comb ionomer of poly(ethylene covinyl alcohol) end-capped with sulfonic acid (EVOH-g-SO $_{3}H)$ was synthesized by two-step synthesis process and electrospun into nonwoven membranes. The effect of processing parameters on the fibrous and beads morphology was investigated by scanning electron microscopy (SEM). The result indicated that the morphology of $EVOH-g-SO_{3}H$ membrane was heavily dependent on the electrospinning process as the electrospinning voltage (v), the concentration of polymer solution (c), the surface tension of polymer solution (sigma), the solution flow-rate (upsi), and the deposition distance between the syringe needle and the collecting drum (1). A 'beads-on-string' morphology could be seen from SEM image when the solution was electrospun in DMAc/water while decreasing the surface tension is a good way towards the formation of fibers without beads. When the solution concentration reaches 35wt%, a melded twist-ribbon structure could appear. There is an optimum range of solution concentration (5.0~20.0wt%) for a stable electrospinning and nonwoven formation. A higher applied voltage could result in a higher electric charge density on the surface of polymer solution jet during the electrospinning, they cause the higher splitting to the polymer jet and result in higher density and smaller diameter of round beads, as well as they also produce the thinner diameters fibers
Starting Page	42
Ending Page	46
File Size	6631796
Page Count	5
File Format	PDF
ISBN	1424401399
DOI	10.1109/NEMS.2006.334618
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Biomembranes Polymers Morphology Scanning electron microscopy Voltage Surface tension Ovens Systems engineering and theory Educational institutions Needles morphology electrospinning EVOH-g-SO3H SEM
Content Type	Text
Resource Type	Article

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