Robust polyurethane networks with flame-retardant, antioxidative, self-healing and reprocessing capabilities from biobased naringenin and vanillin

作者：Hu, Chaoying; Liu, Fanqi; Luo, Zhaoyi; Yi, Quanqian; Zeng, Yanning^*; Chen, Yunhua; Wang, Chaoyang

来源：PROGRESS IN ORGANIC COATINGS, 2024, 187: 108191.

DOI：10.1016/j.porgcoat.2023.108191

• Biobased polyurethane vitrimers
• Naringenin
• Antioxidation
• Flame-retardancy
• Recycling
• Self -healing

Biobased reprocessable polyurethane (PU) networks have drawn significant attention due to limited petroleum resources and aggravating environmental issues. However, the preparation of biobased PU networks with simultaneous efficient flame-retardant, antioxidative, self-healing and reprocessing performance is a great challenge due to the complicated structural design required. A novel strategy to fabricate multifunctional PU networks containing dynamic phenol-carbamate bonds from biobased naringenin and vanillin has been developed. First, a vanillin-based diol containing organic phosphorus moieties (VD) was prepared. Then modified diol and naringenin were combined to produce a self-healable, recyclable, antioxidative and flame-retarded PU (NVPx)s where x represents the molar ratio of n[-OH(VD)] / n{[-OH(naringenin)] + [-OH(VD)] + [-OH(PTMG)]} possesses excellent flame-retardant, antioxidative, self-healing and reprocessing performance due to the presence of dynamic phenol-carbamate bonds, organophosphorus and phenolic moieties. An effective approach to the manufacture of multifunctional PUs with a potential application in the field of self-healing and flame-retardant coating, wound dressing membranes and fire-control engineering materials has been demonstrated.

• 单位
  桂林理工大学