Electrospinning of linear and highly branched segmented poly(urethane urea)s

Matthew G. McKee, Taigyoo Park, Serkan Unal, Iskender Yilgor, Timothy E. Long

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

Electrospun fibrous mats were formed from linear and highly branched poly(urethane urea)s. The highly branched poly(urethane urea)s were synthesized using an A2+B3 methodology, where the A2 species is an oligomeric soft segment. Since the molecular weight of the A 2 oligomer is above the entanglement molecular weight, the highly branched polymers formed electrospun fibers unlike typical hyperbranched polymers that do not entangle. Stress-strain experiments revealed superior elongation for the electrospun fibrous mats. In particular, the highly branched fiber mats did not fail at 1300% elongation, making the electrospun mats promising for potential applications where enhanced tear strength resistance is required.

Original languageEnglish (US)
Pages (from-to)2011-2015
Number of pages5
JournalPolymer
Volume46
Issue number7
DOIs
StatePublished - Mar 10 2005
Externally publishedYes

Keywords

  • Electrospinning
  • Hyperbranched
  • Poly(urethane urea)

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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