Polymeric microtubes for water filtration by co-axial electrospinning technique

Rafi Halaui*, Eyal Zussman, Rafail Khalfin, Raphael Semiat, Yachin Cohen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Co-axial electrospinning technique has proved to be a reliable way of producing thin and small hollow fibers with a symmetric or asymmetric structure that may be useful for water treatment. All the hollow fibers produced had an inner diameter of up to 4 µm and average wall thickness of 600 nm. Poly(vinylidene fluoride-co-hexa fluoro propylene) hollow fibers exhibited a dense structure while the addition of poly(ethylene glycol) changed its structure to an asymmetric one, with a dense layer on both inner and outer sides. The semicrystalline copolylmer fibers exhibited a fibrillar structure. Hollow fibers made of the homopolymer poly(vinylidene fluoride) exhibited an asymmetric structure, while polysulfone or poly(ether imide) hollow fibers exhibited a symmetric porous structure.

Original languageEnglish
Pages (from-to)570-582
Number of pages13
JournalPolymers for Advanced Technologies
Issue number5
StatePublished - May 2017
Externally publishedYes


  • co-axial electrospinning
  • hollow fibers
  • membrane

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