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Gellan gel comprising short PVDF based-nanofibers: The effect of piezoelectric nanofiber on the mechanical and electrical behavior

Mohseni, M ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1016/j.mtcomm.2020.101785
  3. Publisher: Elsevier Ltd , 2021
  4. Abstract:
  5. Gel-fiber structure with the potential of extracellular matrix (ECM) mimics can be introduced as a suitable candidate for bioengineering applications. In this study, piezoelectric gellan gel-fiber was prepared with incorporating poly(vinylidenefluoride) (PVDF)/glass-flake in the gellan matrix. Glass-flake nanoparticles were modified with silane group, PVDF/glass-flake nanofibers were synthesized and short-strand nanofibers were fabricated using the mechanical homogenizer method. Brunauer–Emmett–Teller (BET), Fourier-transform infrared spectroscopy (FTIR), and Thermogravimetric analysis (TGA) analyses were used for surface modification study, and scanning electron microscopy (SEM), piezoelectric measurement, and mechanical behavior were the nanofiber characterization. Gelation time, swelling and rheology were used for the gellan gel examination. Glass-flake surface modification and electrospinning of PVDF/glass-flake were performed successfully. Piezoelectric results showed enhanced output voltage compared to PVDF nanofibers. Storage and loss modulus of gellan gel-fiber was increased with fiber loading and gelation time has been changed. Gellan/PVDF nanofibers are strongly recommended as an in-situ gel with piezoelectric features for tissue engineering. © 2020 Elsevier Ltd
  6. Keywords:
  7. Fibers ; Fourier transform infrared spectroscopy ; Gelation ; Glass ; Piezoelectricity ; Scanning electron microscopy ; Synthesis (chemical) ; Thermogravimetric analysis ; Tissue engineering ; Extracellular matrices ; Fiber structures ; Mechanical and electrical behaviors ; Mechanical behavior ; Piezoelectric measurements ; Piezoelectric nanofibers ; Polyvinylidene fluorides ; Storage and loss modulus ; Nanofibers
  8. Source: Materials Today Communications ; Volume 26 , 2021 ; 23524928 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S2352492820327963