Gelatin shells strengthen polyvinyl alcohol core-shell nanofibers

Valerie Merkle, Like Zeng, Weibing Teng, Marvin J Slepian, Xiaoyi Wu

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this study, polyvinyl alcohol (PVA) and gelatin are coaxially electrospun into core-shell nanofibers to derive mechanical strength from PVA and bioactivity from gelatin. The core-shell nanofibers with PVA in the core and gelatin in the shell display an increased Young's modulus, improved tensile strength, and reduced plastic deformation than PVA nanofibers. When the order of gelatin and PVA is reversed in the core-shell nanofibers, however, the mechanical strengthening effects disappear. It thus suggests that the bioactive yet mechanically weak gelatin shell improves the molecular alignment of PVA in the core and transforms the weak, plastic PVA into a strong, elastic PVA. The use of a gelatin shell as a biological coating and a protecting barrier to strengthen the core in electrospinning presents a new strategy for fabricating advanced composite nanofibers.

Original languageEnglish (US)
Pages (from-to)6003-6007
Number of pages5
JournalPolymer
Volume54
Issue number21
DOIs
StatePublished - Oct 4 2013

Fingerprint

Polyvinyl Alcohol
Polyvinyl alcohols
Gelatin
Nanofibers
Molecular orientation
Electrospinning
Bioactivity
Strength of materials
Plastic deformation
Tensile strength
Elastic moduli
Plastics
Coatings
Composite materials

Keywords

  • Coaxial electrospinning
  • Core-shell nanofibers
  • Mechanical strengthening

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Gelatin shells strengthen polyvinyl alcohol core-shell nanofibers. / Merkle, Valerie; Zeng, Like; Teng, Weibing; Slepian, Marvin J; Wu, Xiaoyi.

In: Polymer, Vol. 54, No. 21, 04.10.2013, p. 6003-6007.

Research output: Contribution to journalArticle

Merkle, Valerie ; Zeng, Like ; Teng, Weibing ; Slepian, Marvin J ; Wu, Xiaoyi. / Gelatin shells strengthen polyvinyl alcohol core-shell nanofibers. In: Polymer. 2013 ; Vol. 54, No. 21. pp. 6003-6007.
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