Antibacterial [2-(Methacryloyloxy) ethyl] Trimethylammonium Chloride Functionalized Reduced Graphene Oxide/Poly(ethylene-co-vinyl alcohol) Multilayer Barrier Film for Food Packaging

作者：Wang, Hualin^*; Chen, Minmin; Jin, Chongyang; Niu, Baicheng; Jiang, Suwei; Li, Xingjiang; Jiang, Shaotong

来源：Journal of Agricultural and Food Chemistry, 2018, 66(3): 732-739.

DOI：10.1021/acs.jafc.7b04784

• layer-by-layer assembly
• barrier
• antibacterial activity
• functionalized reduced graphene oxide
• active packaging

The objective of present work was to construct antibacterial [2-(methacryloyloxy) ethyl] trimethylammonium chloride functionalized reduced graphene oxide/poly(ethylene-co-vinyl alcohol) (MTAC-rGO/EVOH) multilayer barrier films by using layer-by-layer assembly under a parallel electric field. Besides barrier and mechanical properties, the antibacterial activities of the film and cytotoxicity of MTAC-rGO nanosheets were extensively investigated. The functionalization of rGO was achieved by grafting MTAC onto a graphene framework through C (sp(3))-C bonds. The assembly of MTAC-rGO on the EVOH matrix not only significantly improved film mechanical strength, but also endowed the targeting film with outstanding moisture barrier even under a relative humidity of 99% (e.g., 0.019 g m(-2) S-1 atm(-1) for (MTAC-rGO/EVOH)(20)) besides good oxygen barrier (e.g., 0.07 cm(3) m(-2) d(-1) atm(-1) for (MTAC-rGO/EVOH)(20)). Among the testing films, MTAC-rGO/EVOH film had the best antibacterial activity, and the activity against S. aureus was better than E. coli. Meanwhile, the cytotoxicity of MTAC-rGO nanosheets was very low. Results suggest that MTAC-rGO/EVOH film may have great potential in food active packaging.

• 出版日期2018-1-24
• 单位合肥工业大学