Development of Antibacterial Composite Films Based on Isotactic Polypropylene and Coated ZnO Particles for Active Food Packaging
Source abstract
Abstract
This study was aimed at developing new films based on isotactic polypropylene (iPP) for food packaging applications using zinc oxide (ZnO) with submicron dimension particles obtained by spray pyrolysis. To improve compatibility with iPP, the ZnO particles were coated with stearic acid (ZnOc). Composites based on iPP with 2 wt % and 5 wt % of ZnOc were prepared in a twin-screw extruder and then filmed by a calender. The effect of ZnOc on the properties of iPP were assessed and compared with those obtained in previous study on iPP/ZnO and iPP/iPPgMA/ZnO. For all composites, a homogeneous distribution and dispersion of ZnOc was obtained indicating that the coating with stearic acid of the ZnO particles reduces the surface polarity mismatch between iPP and ZnO. The iPP/ZnOc composite films have relevant antibacterial properties with respect to E. coli, higher thermal stability and improved mechanical and impact properties than the pure polymer and the composites iPP/ZnO and iPP/iPPgMA/ZnO. This study demonstrated that iPP/ZnOc films are suitable materials for potential application in the active packaging field.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Microplastics and Plastic Pollution · Nanocomposite Films for Food Packaging · biodegradable polymer synthesis and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Polymers, Composites and Biomaterials, Consiglio Nazionale delle Ricerche (IPCB/CNR) Via Campi Flegrei 34, Naples 80078, Italy
Istituto per le Macchine Agricole e Movimento Terra, Consiglio Nazionale delle Ricerche (IMAMOTER-CNR) Strada delle Cacce 73, Torino 10135, Italy
References (40)
Show source-provided references
1. Metal oxide nanoparticles as bactericidal agents10.1021/la0202374 ↗
2. Antibacterial activity of ZnO nanoparticle suspensions on a broad spectrum of microorganisms10.1111/j.1574-6968.2007.01012.x ↗
3. Review on Zinc oxide nanoparticles: Antibacterial activity and toxicity mechanism10.1007/s40820-015-0040-x ↗
4. Padmavathy, N., and Vijayaraghavan, R. (2008). Enhanced bioactivity of ZnO nanoparticles—An antimicrobial study. Sci. Technol. Adv. Mater., 9.10.1088/1468-6996/9/3/035004 ↗
5. Influence of particle size on the antibacterial activity of zinc oxide10.1016/S1466-6049(01)00197-0 ↗
6. Toxicological impact studies based on Escherichia coli bacteria in ultrafine ZnO nanoparticles colloidal medium10.1021/nl052326h ↗
7. Mechanistic investigation into antibacterial behaviour of suspensions of ZnO nanoparticles against E. coli10.1007/s11051-009-9711-1 ↗
8. Toxicity of ZnO nanoparticles to Escherichia coli: Mechanism and the influence of medium components10.1021/es102624t ↗
9. Hydrogen peroxide as an antibacterial factor in zinc oxide powder slurry10.1016/S0922-338X(98)80165-7 ↗
10. Lipovsky, A., Nitzan, Y., Gedanken, A., and Lubart, R. (2011). Antifungal activity of ZnO nanoparticles—The role of ROS mediated cell injury. Nanotechnology, 22.10.1088/0957-4484/22/10/105101 ↗
11. Change in antibacterial characteristics with doping amount of ZnO in MgO-ZnO solid solution10.1016/S1466-6049(00)00045-3 ↗
12. Food packaging based on polymer nanomaterials10.1016/j.progpolymsci.2011.02.003 ↗
13. Silvestre, C., and Cimmino, S. (2013). Ecosustainable Polymer Nanomaterials for Food Packaging: Innovative Solutions, Characterization Needs, Safety and Environmental Issues, CRC Press, Taylor & Francis Group.10.1201/b13754 ↗
14. Yam, K.L., and Lee, D.S. (2012). Antimicrobial Polymers, John Wiley & Son.
15. Synthesis and characterization of ZnO—Polymer nanocomposites10.1007/s12289-008-0288-5 ↗
16. Processing and property improvement of polymeric composites with added ZnO nanoparticles through microinjection molding10.1002/app.25195 ↗
17. Effect of nanocomposite packaging containing Ag and ZnO on reducing pasteurization temperature of orange juice10.1111/j.1745-4549.2011.00558.x ↗
18. Antimicrobial activity of nanocomposites: Poly(amide) 6 and low density poly(ethylene) filled with zinc oxide
19. Influence of incorporation of ZnO nanoparticles and biaxial orientation on mechanical and oxygen barrier properties of polypropylene films for food packaging10.1002/app.33277 ↗
20. Chandramouleeswaran, S., Mhaske, S.T., Kathe, A.A., Varadarajan, P.V., Prasad, V., and Vigneshwaran, N. (2007). Functional behaviour of polypropylene/ZnO-soluble starch nanocomposites. Nanotechnolohy, 18.10.1088/0957-4484/18/38/385702 ↗
21. Effects of organic nucleating agents and zinc oxide nanoparticles on isotactic polypropylene crystallization10.1016/j.polymer.2003.11.046 ↗
22. Preparation and characterization of isotactic polypropylene/zinc oxide microcomposites with antibacterial activity10.1038/pj.2013.8 ↗
23. Silvestre, C., and Cimmino, S. (2013). Ecosustainable Polymer Nanomaterials for Food Packaging, CRC Press, Taylor & Francis Group.10.1201/b13754 ↗
24. Effect of compatibilisers on mechanical, barrier and antimicrobial properties of iPP/ZnO nano/microcomposites for food packaging application
25. Antibacterial activity of PA6/ZnO nanocomposite fibers10.1177/0040517511407380 ↗
26. Murariu, M., Paint, Y., Murariu, O., Raquez, J.M., Bonnaud, L., and Dubois, P. (2015). Current progress in the production of PLA–ZnO nanocomposites: Beneficial effects of chain extender addition on key properties. J. Appl. Polym. Sci., 132.10.1002/app.42480 ↗
27. Zinc oxide thin films by the spray pirolysis method10.1016/0040-6090(95)06893-7 ↗
28. Spray pyrolysis synthesis of submicronic particles. Possibilities and limits
29. Effect of hydrocarbon resin on the morphology and mechanical properties of isotactic polypropylene/clay composites10.1002/app.32745 ↗
30. Waste and virgin LDPE/PET blends compatibilized with an Ethylene-Butyl Acrylate-Glycidyl Methacrylate (EBAGMA) Terpolymer, 110.1002/mame.200500217 ↗
31. Compatibilization of polymer blends10.1002/cjce.5450800601 ↗
32. Akbar, B., and Bagheri, R. (2012). Influence of compatibilizer and processing conditions on morphology, mechanical properties, and deformation mechanism of PP/Clay nanocomposite. J. Nanomater., 8.10.1155/2012/810623 ↗
33. Active packaging coatings10.3390/coatings5040771 ↗
34. (2001). ASTM E 2149-10: Standard Test Method for Determining the Antimicrobial Activity of Immobilized Antimicrobial Agents under Dynamic Contact Conditions, ASTM.
35. Zinc oxide nanostructures: Growth, properties and applications10.1088/0953-8984/16/25/R01 ↗
36. Correletion of infrared spectra of zinc(II) carboxtlates with their structures10.1016/j.saa.2006.02.050 ↗
37. Sodium stearate absorbtion onto titania pigment10.1016/j.jcis.2003.08.031 ↗
38. Formation of rod-like zinc oxide microcrystals in homogeneous solution10.1039/FT9908600959 ↗
39. Vasile, C. (2000). Handbook of Polyolefins, Marcel Dekker. [2nd ed.].10.1201/9780203908716 ↗
40. Structure, morphology and crystallization of a random ethylene-propylene copolymer10.1002/polb.10403 ↗