High-modulus rotary jet spun co-polyimide nanofibers and their composites

IF 4.2 3区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
J. Rogalski, Han Zhang, Jian Yao, C. Bastiaansen, T. Peijs
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引用次数: 8

Abstract

Abstract The production of high-modulus and high-strength polymer nanofibers using centrifugal or rotary jet spinning (RJS) was explored. Co-polyimide nanofibers based on 3,3′,4,4′-biphenyl-tetracarboxylic dianhydride (BPDA)/p-phenylenediamine (PDA)/4,4′-oxydianiline (ODA) (BPO) were successfully spun by RJS from a polyamic acid precursor solution before conversion into highly oriented and chain extended BPO co-polyimide fibers via an imidization step. Fourier transform infrared (FTIR) characterization was used to evaluate the chemical conversion of the fibers. Nanocomposite laminates based on co-polyimide nonwoven fiber mats in epoxy were manufactured for mechanical testing. Analysis using the generalized rule of mixtures resulted in a back-calculated fiber modulus and strength of around 50 and 2 GPa, approaching that of high-performance fibers like Kevlar® 29, and equaling those of co-polyimide fibers obtained via electrospinning, making them the strongest centrifugal spun fibers ever reported. Graphical Abstract
高模量旋转喷射纺丝共聚酰亚胺纳米纤维及其复合材料
摘要:研究了离心或旋转喷射纺丝(RJS)制备高模量、高强聚合物纳米纤维的工艺。以3,3 ',4,4 ' -联苯-四羧基二酐(BPDA)/对苯二胺(PDA)/4,4 ' -氧二胺(ODA) (BPO)为基材,采用RJS纺丝,成功纺出了基于该基材的共聚酰亚胺纳米纤维,并通过亚胺化步骤转化为高取向、高链延伸的BPO共聚酰亚胺纤维。利用傅里叶变换红外(FTIR)表征方法对纤维的化学转化进行了评价。在环氧树脂中制备了基于共聚亚胺非织造纤维垫的纳米复合层压板,并进行了力学性能测试。使用广义混合规则进行分析,得出的纤维模量和强度分别约为50和2 GPa,接近凯夫拉®29等高性能纤维的模量和强度,与静电纺丝获得的共聚酰亚胺纤维的模量和强度相当,使其成为迄今为止报道过的最强离心纺丝纤维。图形抽象
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来源期刊
Nanocomposites
Nanocomposites Multiple-
CiteScore
7.40
自引率
15.20%
发文量
18
审稿时长
16 weeks
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