Non-covalently Functionalized Graphene Oxide-Based Coating to Enhance Thermal Stability and Flame Retardancy of PVA Film

• DOI: 10.1007/s40820-018-0190-8
• Publication Date: 2018-02-16T03:31:28Z
• Authors: Wenhua Chen; Pengju Liu; Lizhen Min; Yiming Zhou; Yuan Liu; Qi Wang; Wenfeng Duan
• Keywords: Vinyl alcohol; Thermal Stability

The synergistic effect of conventional flame-retardant elements and graphene has received extensive attention in the development a new class flame retardants. Compared to covalent modification, non-covalent strategy is simpler expeditious entirely preserves original quality graphene. Thus, non-covalently functionalized oxide (FGO) with phosphorus–nitrogen compound was successfully prepared via one-pot process this study. Polyethyleneimine FGO were alternatively deposited on surface poly(vinyl alcohol) (PVA) film layer-by-layer assembly driven by electrostatic interaction, imparting excellent retardancy coated PVA film. multilayer FGO-based coating formed protective shield encapsulating matrix, effectively blocking transfer heat mass during combustion. higher initial decomposition temperature about 260 °C nearly 60% reduction total release than neat does. Our results may have promising prospect for polymers.