Solvent-free aqueous dispersions of block copolyesters for electrospinning of biodegradable nonwoven mats for biomedical applications

Kathrin Bubel, Daniel Grunenberg, Gleb Vasilyev, Eyal Zussman, Seema Agarwal, Andreas Greiner

Research output: Contribution to journalArticlepeer-review

Abstract

Biodegradable block copolyesters are processed from water to water-stable electrospun fibers without use of any organic solvent, which is of major importance for a variety of applications. The copolyesters (poly(ε-caprolactone-b-methoxypolyethylene glycol)) (PCL-b-MPEG)) are emulsified in water at 90°C in presence of poly(ethylene oxide) (PEO) using melt dispersion method. Dramatic increase in viscosity is observed upon addition of PEO to aqueous dispersions of copolyesters. Evidence of structure formation in aqueous PCL-b-MPEG/PEO dispersions is adduced using rheological studies. PCL block length dependent water stable nanofiber non-wovens are obtained upon electrospinning of the dispersions.

Original languageEnglish
Pages (from-to)1445-1454
Number of pages10
JournalMacromolecular Materials and Engineering
Volume299
Issue number12
DOIs
StatePublished - 1 Dec 2014

Keywords

  • Aqueous dispersions
  • Biodegradable block copolyesters
  • Electrospinning

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

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