title: A novel polymer based on MtCu2+/cellulose acetate with antimicrobial activity.
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.
authors: Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Universidad de Santiago de Chile (USACH), Santiago, Chile. Electronic address: julio.bruna@usach.cl.
authors: J E
authors: JE
authors: Bruna
authors: Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Universidad de Santiago de Chile (USACH), Santiago, Chile.
authors: M J
authors: MJ
authors: Galotto
authors: Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Universidad de Santiago de Chile (USACH), Santiago, Chile.
authors: A
authors: A
authors: Guarda
authors: Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Universidad de Santiago de Chile (USACH), Santiago, Chile.
authors: F
authors: F
authors: Rodríguez
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology*; D001546:Bentonite / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D010100:Oxygen / Q000737:chemistry; D011108:Polymers / Q000737:chemistry / Q000494:pharmacology*; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D000890:Anti-Infective Agents; D011108:Polymers; D001546:Bentonite; C005062:acetylcellulose; D003300:Copper; D002482:Cellulose; D010100:Oxygen
keywords: Antimicrobial activity; Cellulose acetate; Copper; Copper modified clay; Montmorillonite; Nanocomposites