Facile Mechanochemical Preparation of Polyamide-derivatives via Solid-state Benzoxazine-isocyanide Chemistry  

作　　者：Xu Sun Wei Shi Xin-Yu Zhou Sheng Ding 

机构地区：[1]Oil&Gas Field Applied Chemistry Key Laboratory of Sichuan Province,College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China

出　　处：《Chinese Journal of Polymer Science》2021年第5期573-584,I0006,共13页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21774103);the Youth Science and Technology Innovation Team of SWPU(Nos.2017CXTD05,2018CXTD05).

摘　　要：With the exploration of novel sustainable protocol for functional polyamides'(PAs)construction as the starting point,herein,the small molecular model compound(M 1-ssBIC)was prepared firstly by manual grinding of monofunctional benzoxazine(1a)and isocyanide(1 b)via solid-state benzoxazine-isocyanide chemistry(ssBIC)to evaluate the feasibility of ssBIC.Linear PAs(P1-series polymers)were subsequently synthesized from biunctional benzoxazine(2a)and isocyanide(2b),and the influence of the loading of catalyst(octylphosphonic acid)(OPA)on the polymerization was investigated.Afterwards,two kinds of cross-linked PAs were successfully constructed via ssBIC by using trifunctional benzoxazine(3a)and cross-linked polybenzoxazine(4a)as reaction substrates,respectively,thus verifying the adaptability of ssBIC.Structural characterization indicates that amide,phenolic hydroxyl and tertiary amine substructures,with metal-complexing capability,have been successfully integrated into the obtained PAs.A type of representative PA/silver composite(P3-AgNPs)was prepared subsequently via in situ reduction treatment,and its application as recyclable reduction catalyst for organic pollutant p-nitrophenol(4-NP)was preliminarily investigated here to provide the example for possible downstream application of ssBIC.We think that this current work could provide a new pathway for the construction of functional PAs through facile and sustainable ssBIC protocol.

关 键 词：MECHANOCHEMISTRY Solid-state synthesis BENZOXAZINE ISOCYANIDE POLYAMIDE 

分 类 号：TQ317[化学工程—高聚物工业] TQ426