TY - JOUR
T1 - Biodegradable epoxy resin from vanillin with excellent flame-retardant and outstanding mechanical properties
AU - Ma, Jinpeng
AU - Li, Guanxi
AU - Hua, Xueni
AU - Liu, Ning
AU - Liu, Zhe
AU - Zhang, Fan
AU - Yu, Liangliang
AU - Chen, Xue
AU - Shang, Lei
AU - Ao, Yuhui
N1 - Publisher Copyright:
© 2022
PY - 2022/7
Y1 - 2022/7
N2 - In this work, the sustainable and biodegradable flame retardant epoxy resin was designed and prepared to replace resource-limited petrochemicals, especially, bisphenol A type epoxy resin (DGEBA). A renewable chemical, vanillin was condensation to produce Schiff-based compound (MAV) employing the novel epoxy resin (MVE) through the epoxidation reaction. The epoxy equivalent of MVE was approximately 217 g/eq and used non-isothermal differential scanning calorimetry (DSC) to study the curing kinetics of MVE/DDM (4,4′-Diaminodiphenylmethane). After curing by DDM, they exhibit outstanding mechanical property and a residual char rate as high as 41.77%, excellent inherent flame retardancy and limited oxygen index (LOI) value higher than 34%, far superior to DGEBA. The total heat release (THR) and smoke release rate (SPR) of MVE/DDM decreased by 67.44% and 64.69% compared with DGEBA/DDM, respectively. The mechanisms for the enhancement of flame retardancy by intrinsic flame retardant epoxy resin were investigated. Moreover, the sustainable epoxy crosslinking could degrade completely benefited from the structure of the Schiff base in the moderate conditions (THF: H2O = 6: 4, 50 °C) within few hours. Overall, this work contributes a multifunctional vanillin-based epoxy monomer and environmentally friendly thermosets with high mechanical property and enhanced flame retardancy.
AB - In this work, the sustainable and biodegradable flame retardant epoxy resin was designed and prepared to replace resource-limited petrochemicals, especially, bisphenol A type epoxy resin (DGEBA). A renewable chemical, vanillin was condensation to produce Schiff-based compound (MAV) employing the novel epoxy resin (MVE) through the epoxidation reaction. The epoxy equivalent of MVE was approximately 217 g/eq and used non-isothermal differential scanning calorimetry (DSC) to study the curing kinetics of MVE/DDM (4,4′-Diaminodiphenylmethane). After curing by DDM, they exhibit outstanding mechanical property and a residual char rate as high as 41.77%, excellent inherent flame retardancy and limited oxygen index (LOI) value higher than 34%, far superior to DGEBA. The total heat release (THR) and smoke release rate (SPR) of MVE/DDM decreased by 67.44% and 64.69% compared with DGEBA/DDM, respectively. The mechanisms for the enhancement of flame retardancy by intrinsic flame retardant epoxy resin were investigated. Moreover, the sustainable epoxy crosslinking could degrade completely benefited from the structure of the Schiff base in the moderate conditions (THF: H2O = 6: 4, 50 °C) within few hours. Overall, this work contributes a multifunctional vanillin-based epoxy monomer and environmentally friendly thermosets with high mechanical property and enhanced flame retardancy.
KW - Bio-based epoxy resin
KW - Flame-retardant material
KW - Mechanical properties
KW - Schiff
UR - http://www.scopus.com/inward/record.url?scp=85131105283&partnerID=8YFLogxK
U2 - 10.1016/j.polymdegradstab.2022.109989
DO - 10.1016/j.polymdegradstab.2022.109989
M3 - Article
AN - SCOPUS:85131105283
SN - 0141-3910
VL - 201
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
M1 - 109989
ER -