Colloidal Cu nanoparticles/chitosan composite film obtained by microwave heating for food package applications

• Published in: Polymer bulletin (Berlin, Germany) Vol. 62; no. 4; pp. 511 - 524
• Main Authors: CARDENAS, G, DIZ V, J, MLELEDREZ, M. F, CRUZAT C, C, GARCIA CANCINO, A
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.04.2009; Springer; Springer Nature B.V
• Subjects: Applied sciences; Atoms & subatomic particles; Bacteria; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Chitosan; Colloids; Complex Fluids and Microfluidics; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Heating; Light transmission; Microorganisms; Microscopy; Microwave heating; Moisture content; Nanoparticles; Nitrogen; Organic Chemistry; Original Paper; Permeability; Physical Chemistry; Polymer industry, paints, wood; Polymer Sciences; Soft and Granular Matter; Technology of polymers; Thermodynamic properties; Ultraviolet radiation; Water vapor; Chile; Mumbai India; India; Antimicrobial activity; Colloidal Cu nanoparticles; Films; Light barrier; Chitosan; Water barrier; Microwave heating; Biological properties; Transparency; Transport properties; Film; Experimental study; Metal particle; Antimicrobial agent; Composite material; Bactericidal effect; Thermal properties; Gas permeability; Steam permeability; Morphology; Optical properties; Barrier material; Oside polymer; Nanocomposite; Manufacturing; Copper; Colloid particle
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-008-0031-x

In this paper, we describe the preparation and characterization of colloidal Cu nanoparticles/chitosan composite film (composite film) by solution-casting technique with microwave heating. Effects of the incorporation of colloidal Cu nanoparticles on structure, thermal behavior, surface, barrier properties and light transmission of composite film were investigated. The antimicrobial activity of films against Staphylococcus aureus and Salmonella enterica serovar Typhimurium, were also tested. Incorporation of colloidal Cu nanoparticles on chitosan matrix improved the barrier properties of films, decreasing the oxygen permeability as well as water vapor permeability and increasing the protection against UV light. The composite film was effective in alteration of cell wall and reduction of microbial concentration in the liquid culture for both bacteria tested.