Engineered Regeneration (Jan 2021)

Breathable, stretchable and adhesive nanofibrous hydrogels as wound dressing materials

  • Xueting Liu,
  • Yumin Liu,
  • Jingtao Du,
  • Xiaoran Li,
  • Jianyong Yu,
  • Bin Ding

Journal volume & issue
Vol. 2
pp. 63 – 69

Abstract

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In spite of the great progress of wound healing materials, the development of dressing with moisture permeability, stretchable capability, and adhesive performance remains a huge challenge. In this study, gelatin-dopamine (GT-DA) nanofiber membrane was prepared by introducing dopamine (DA) into gelatin (GT) via electrospinning followed by in-situ reaction. The effects of DA dosage, crosslinking condition and crosslinking time on the mechanical properties of the fiber membrane were studied systematically. The resultant GT-DA nanofibrous hydrogels exhibited integrated stress strength of 1.96 MPa, good water absorption of 700%, and water vapor transmission (WVT: 4.3 kg m−2d−1), which were superior than those of Mepiform®, a commercial adhesive silicone dressing. In addition, Fe3+ were introduced into one side of the nanofiber membrane. A stronger adhesion strength of 2.5 KPa on the porcine skin, which was 1.6 times higher than that of Mepiform® was achieved. Our research showed that the prepared nanofibrous hydrogel has potential as wound dressing and could be used in post-traumatic tissue healing engineering. This work presented a type of breathable, stretchable and adhesive nanofibrous hydrogels, which would ensure the stable attachment on wounds during movement as a wound healing material.

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