Lin Tang, Mingshun Jia, Mukun He, Qiqi Liu, Yuhan Lin, Yiting Yi, Xiaolin Liu, Xi Liu*, Yusheng Tang* and Junwei Gu*. Fabrication, applications and prospects for poly(p-phenylene benzobisoxazole) nanofibers. SusMat, 2024, 10.1002/sus2.245. 2023IF=18.7.（1区材料科学Top期刊，中国科技期刊卓越行动计划高起点新刊）https://doi.org/10.1002/sus2.245

Abstract

Polymer nanofibers exhibit unique nanoscale effects, high specific strength and modulus, exceptional design flexibility, large aspect ratios, and substantial specific surface areas. These characteristics have drawn significant attention in emerging fields such as flexible electronics, 5G communications, and new energy vehicles. Notably, poly(p-phenylene benzobisoxazole) nanofibers (PNFs) present the best thermal stability and flame retardancy among all known polymer nanofibers. Furthermore, due to the highly oriented molecular chains and orderly structure, PNFs demonstrate superior thermal conductivity compared to conventional polymer nanofibers, thus garnering significant attention and favor from researchers.This paper summarizes the latest research progress of PNFs, detailing three preparation methods (electrospinning, mechanical dissociation, and protonation) along with their respective advantages and disadvantages. It also elucidates the current development status of PNFs in applications such as flame retardancy, thermal conduction, electrical insulation, electromagnetic shielding and battery separators, and discusses the challenges and prospects faced by PNFs. This paper aims to provide theoretical guidance for the preparation and application of PNFs, enhancing their potential in advanced applications, and further expanding their application scope.

聚合物纳米纤维具有独特的纳米效应、高的比强度/比模量、优异的可设计性、大的长径比和比表面积等优点，在柔性电子、5G通讯和新能源汽车等诸多新兴领域受到广泛的关注。其中，聚对苯撑苯并二噁唑纳米纤维（PNF）是目前已知聚合物纳米纤维中耐热性能最佳、阻燃性能最优以及拉伸强度最高的一种先进纳米纤维。此外，PNF由于局部的分子链取向和规整结构展现出比常规聚合物纳米纤维更佳的导热性能，备受研究者的关注和青睐。本文综述了PNF的最新研究进展，详细介绍了PNF的三种制备方法（静电纺丝法、机械解离法和质子化法）及其各自的优缺点，并阐述了PNF在阻燃、导热、电绝缘、电磁和电池隔膜等应用领域的发展现状，指出了PNF当前面临的挑战与前景展望。本综述旨在为PNF的制备和应用提供一定的理论指导，提升PNF及其复合材料在先进应用中的更多可能性，进一步拓展其应用范围。

第一作者：唐林

邮件地址：tanglin@cqnu.edu.cn