Crosslinked PVAL nanofibers with enhanced long-term stability prepared by single-step electrospinning

Robertus Wahyu N Nugroho, Prasun Kumar Roy, Karin Odelius, Ann Christine Albertsson*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

We present a single-step route for the preparation of crosslinked poly(vinyl alcohol) (PVAL) nanofibers where a conventional electrospinning setup can be used. The simple crosslinking chemistry and the fast and easily applicable technique is an important step towards large-scale production. In contrast to conventional systems, the PVAL crosslinker solution exhibited no increase in viscosity during storage and can therefore be used even after long shelf-times before electrospinning. In addition, the crosslinked nanofibrous mats exhibited a gel content of almost 100%, indicating complete crosslinking; they did not dissolve in water, and no PVAL was found in the aqueous extract. The E-moduli of the nanofibrous mats before and after water immersion could be measured by an intermodulation atomic force microscopy technique. A denser nanofibrous texture with enhanced mechanical properties can be observed after long-term water immersion.

Original languageEnglish
Pages (from-to)421-429
Number of pages9
JournalPOLYMERS FOR ADVANCED TECHNOLOGIES
Volume24
Issue number4
DOIs
Publication statusPublished - Apr 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • AFM
  • Crosslinking
  • Electrospinning
  • Polyvinyl alcohol
  • Single step

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