A deep insight into polybenzoxazole formation in the heterocycle-containing polybenzoxazine: An enlightening thought for smarter precursor design
文献类型：期刊论文
| 作者 | Liu, Jingkai; Cao, Lijun; Dai, Jinyue; Peng, Yunyan; Liu, Xiaoqing |
| 刊名 | POLYMER
 |
| 出版日期 | 2021 |
| 卷号 | 226 |
| 关键词 | RING-OPENING POLYMERIZATION BENZOXAZINE CATALYST |
| 英文摘要 | When artificially introducing an ortho-amide group into benzoxazine monomer, the conversion of polybenzoxazine (PBZ) into polybenzoxazole (PBO) could happen at higher temperature. However, the mechanism investigation for this reaction is far from enough, which is very significant for the PBO fabrication from PBZ. In this work, we designed three kinds of benzoxazines (PIC-abz, 4-MEP-abz and 6-MEP-abz) containing both pyridyl and amide group with similar structures. The existence of intramolecular N-HMIDLINE HORIZONTAL ELLIPSISN H-bonding involved with amide group and the N atom in pyridine ring, as well as the N-HMIDLINE HORIZONTAL ELLIPSISO H-bonding between the amide N-H and the O atom in oxazine ring, were confirmed by 1H-1H nuclear overhauled effect spectroscopy (NOESY) and concentration dependent 1H NMR spectra. In addition, the respective strength of these H-bonding in different precursors was calculated by non-covalent interaction (NCI) simulation. Results showed that besides the performance of resulted PBZ, the conversion temperature of PBZ into PBO was significantly influenced by the N-HMIDLINE HORIZONTAL ELLIPSISN hydrogen bonding involved with pyridyl and amide groups. Based on which, the mechanism of PBO formation was proposed and systematically investigated. The outcome of this work will help us to obtain PBO in a more efficient and reasonable manner starting from PBZ. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21848]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | Liu, XQ (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Liu, Jingkai,Cao, Lijun,Dai, Jinyue,et al. A deep insight into polybenzoxazole formation in the heterocycle-containing polybenzoxazine: An enlightening thought for smarter precursor design[J]. POLYMER,2021,226. |
| APA | Liu, Jingkai,Cao, Lijun,Dai, Jinyue,Peng, Yunyan,&Liu, Xiaoqing.(2021).A deep insight into polybenzoxazole formation in the heterocycle-containing polybenzoxazine: An enlightening thought for smarter precursor design.POLYMER,226. |
| MLA | Liu, Jingkai,et al."A deep insight into polybenzoxazole formation in the heterocycle-containing polybenzoxazine: An enlightening thought for smarter precursor design".POLYMER 226(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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