81.(Eur. Polym. J.) Phosphate-based covalent adaptable networks with recyclability and flame retardancy from bioresources
作者：Yanlin Liu#, Binbo Wang#, Songqi Ma*, Xiwei Xu, Jianfan Qiu, Qiong Li, Sheng Wang, Na
關鍵字：Epoxy thermosets, phosphate, vitrimers, degradable polymers, flame retardancy
論文來源：期刊
具體來源：European Polymer Journal
發表時間：2020年
Epoxy thermosets play a significant role in our life, while they have three
common issues of depending on fossil resources, flammability and recycle
difficulty. Nowadays, it’s still a challenge to address them simultaneously. Here, we report phosphate-based epoxy covalent
adaptable networks (CANs) with reprocessability, degradability and flame
retardancy from bioresources. Epoxy monomer synthesized from itaconic
acid was cross-linked with phytic acid to achieve the phosphate-based epoxy CANs.
The CANs were reprocessed at 160 °C within 1.5 h
with the activation energy of the bond exchange of 49-90 kJ mol-1 and were readily degraded under mild basic
conditions. Meanwhile, the epoxy CANs presented flame retardancy
with UL-94 V0 rating and high LOI of 31.2-33.5% on account of the high
phosphorus content of phytic acid. This work opens the door of developing
phosphate-based CANs and provides a simple method to produce bio-based and
fire-safe thermosets.
論文鏈接：https://www.sciencedirect.com/science/article/pii/S0014305720319534?via%3Dihub