In situ synthesis of Fe3O4@ cyanoethyl cellulose composite as antimicrobial and semiconducting film

Carbohydr Polym. 2020 May 15:236:116032. doi: 10.1016/j.carbpol.2020.116032. Epub 2020 Feb 18.

Abstract

Cyanoethyl cellulose (CEC)/ magnetite (Fe3O4) flexible composite film with enhanced dielectric and magnetic properties was successfully prepared. CEC has been synthesized from micro crystalline cellulose (MCC). The effects of magnetite mass fraction on the morphology, microstructure, thermal stability, and antimicrobial activity of the as-prepared composite films were investigated. The Vibrating sample magnetometer (VSM) and broadband dielectric spectrometer was also employed to study the magnetic and dielectric properties, respectively. In addition to study the computational calculation of MCC, and CEC by DFT/ B3LYP/6-31G (d) basis sets. The results showed that, the sample that is magnetite free has a diamagnetic response to the applied magnetic field, however the other samples that is loaded with magnetite show super-paramagnetic behavior indicating that the particles' sizes of the magnetite mostly below 20 nm. Also, antimicrobial activities of composite films against (G + ve), (G-ve), were investigated.

Keywords: Antimicrobial activity; Cyanoethyl cellulose; DFT calculation; Magnetite and dielectric properties; Morphology.

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Antifungal Agents / chemical synthesis
  • Antifungal Agents / chemistry
  • Antifungal Agents / pharmacology*
  • Aspergillus niger / drug effects
  • Candida albicans / drug effects
  • Cellulose / analogs & derivatives*
  • Cellulose / chemical synthesis
  • Cellulose / pharmacology*
  • Density Functional Theory
  • Electric Conductivity
  • Escherichia coli / drug effects
  • Ferrosoferric Oxide / chemistry
  • Ferrosoferric Oxide / pharmacology*
  • Magnetic Phenomena
  • Models, Chemical
  • Porosity
  • Staphylococcus aureus / drug effects

Substances

  • Anti-Bacterial Agents
  • Antifungal Agents
  • Cellulose
  • Ferrosoferric Oxide