Graphene oxide nanobrick wall for gas barrier and fire protection of polystyrene
JOURNAL OF MATERIALS SCIENCE(2023)
摘要
Graphene’s highly conjugated network makes processing difficult, limiting its functionality. Graphene oxide (GO) is a popular graphene derivative that allows for water-based processing, while retaining many of graphene’s desirable barrier properties. Polyethylenimine (PEI) and GO were alternately deposited via layer-by-layer assembly, thickened with tris(hydroxymethyl) aminomethane (tris), onto polystyrene, and subsequently reduced (rGO) to evaluate the gas barrier and fire protection of the resultant coating. An eight bilayer PEI + tris/rGO coating has an oxygen transmission rate of 2.88 cm 3 m −2 day −1 atm −1 , which is a 400 × reduction compared to uncoated polystyrene. This 5 μm coating also imparts self-extinguishing behavior following direct flame exposure. This multifunctional film is the first highly aligned graphene oxide nanoplatelet coating to incorporate an amine salt to yield micron-thick films that are suitable for both gas barrier and heat shielding applications. Graphical Abstract
更多查看译文
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要