A novel polymer based on MtCu2+/cellulose acetate with antimicrobial activity

Carbohydr Polym. 2014 Feb 15:102:317-23. doi: 10.1016/j.carbpol.2013.11.038. Epub 2013 Dec 4.

Abstract

Cellulose acetate (CA)/copper montmorillonite modified (MtCu(2+)) antimicrobial nanocomposites for food packaging containing 1, 3 and 5 wt.% nanoparticles were prepared by solution casting technique. X-ray diffraction (XRD) and transmission electron microscopy revealed the existence of intercalated and no intercalated clay form in the CA matrix. The thermal stability of the MtCu(2+)/CA nanocomposites was measured by TGA and DSC, which indicated that the nanocomposites were less thermally stable in comparison to CA pure. Mechanical testing of material did not show differences when MtCu(2+) was added in CA. On the other hand, antimicrobial effect was observed for nanocomposites films, obtaining a 98% reduction against Escherichia coli.

Keywords: Antimicrobial activity; Cellulose acetate; Copper; Copper modified clay; Montmorillonite; Nanocomposites.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Infective Agents / chemistry
  • Anti-Infective Agents / pharmacology*
  • Bentonite / chemistry*
  • Calorimetry, Differential Scanning
  • Cellulose / analogs & derivatives*
  • Cellulose / chemistry
  • Copper / chemistry*
  • Escherichia coli / drug effects
  • Microbial Sensitivity Tests
  • Microscopy, Electron, Scanning
  • Microscopy, Electron, Transmission
  • Oxygen / chemistry
  • Polymers / chemistry
  • Polymers / pharmacology*
  • Thermogravimetry
  • X-Ray Diffraction

Substances

  • Anti-Infective Agents
  • Polymers
  • Bentonite
  • acetylcellulose
  • Copper
  • Cellulose
  • Oxygen