Preparation and properties of graphene oxide silver-loaded polyvinyl alcohol antibacterial hydrogel
DOI:
Author:
Affiliation:

1.Anhui University ,College of Chemistry and Chemical Engineering;2.Anhui Dingyang Bio-based Material limited company

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Using polyvinyl alcohol (PVA), graphene oxide (GO) and silver nitrate as raw materials, a series of reduced graphene oxide (rGO) - supported nano silver / polyvinyl alcohol antibacterial hydrogels (rGO AgNPs / PVA) (PGA) with different mass fractions of AgNPs were prepared by physical crosslinking method (freezing thawing method) without adding initiator and crosslinker. The structure and morphology of the hydrogel were characterized by FTIR and SEM, and its mechanical and biological properties were tested by tensile test and biological experiment. The results showed that the addition of reduced graphene oxide enhanced the mechanical strength of polyvinyl alcohol (PVA) hydrogel, the elongation at break of rGO AgNPs / PVA antibacterial hydrogel was about 60% higher than that of PVA hydrogel, and the tensile strain could reach 125%. Rheological tests showed that the storage modulus (G') and loss modulus (G') of PVA hydrogel were lower than those of rGO AgNPs / PVA hydrogel; rGO and nano silver (AgNPS) are synergistic antibacterial. The antibacterial band widths of PGA-2, PGA-3, PGA-4 and PGA-5 against Escherichia coli and Staphylococcus aureus are 0.5~4.5 mm and 0.5~5.5 mm respectively; SEM test showed that compared with PVA hydrogel, the pores of rGO agnps/pva hydrogel increased, rGO formed network structure through π - π action, and rGO agnps/pva hydrogel showed porous interconnected microstructure.

    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:March 10,2022
  • Revised:August 22,2022
  • Adopted:August 26,2022
  • Online: October 25,2022
  • Published: September 30,2022