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Processing, structure and properties of polyacrylonitrile fibers with 15 weight percent single wall carbon nanotubes
Polymer ( IF 4.6 ) Pub Date : 2020-09-22 , DOI: 10.1016/j.polymer.2020.123065
Pedro J. Arias-Monje , Mingxuan Lu , Jyotsna Ramachandran , Mohammad Hamza Kirmani , Satish Kumar

For the first time, a polyacrylonitrile (PAN) fiber with up to 15 wt% single-wall carbon nanotubes (SWNTs) was produced by dry-jet wet-spinning while maintaining good SWNT individualization. These fibers exhibited a tensile modulus of 32.1 GPa, tensile strength of 0.8 GPa, and axial electrical conductivity of 2.2 S/m. This was possible by using SWNTs that were non-covalently wrapped with poly (methyl methacrylate) (PMMA-SWNTs). Furthermore, this non-covalent PMMA functionalization significantly reduced the amount of solvent and time needed for processing of the spinning solution, as compared to the methods used in prior studies. Rheology of the spinning dispersions and mechanical properties and structural parameters of the produced fibers were related to the filler individualization, filler content and presence of filler-matrix interaction. Potential applications of this PAN fiber with high SWNT loading are briefly discussed.



中文翻译:

15%(重量)单壁碳纳米管的聚丙烯腈纤维的加工,结构和性能

首次通过干喷湿纺丝同时保持良好的SWNT个性化生产了具有高达15 wt%的单壁碳纳米管(SWNT)的聚丙烯腈(PAN)纤维。这些纤维的拉伸模量为32.1GPa,拉伸强度为0.8GPa,轴向导电率为2.2S / m。这可以通过使用未共价包裹有聚甲基丙烯酸甲酯(PMMA-SWNT)的SWNT来实现。此外,与先前研究中使用的方法相比,这种非共价的PMMA官能化显着减少了纺丝溶液加工所需的溶剂量和时间。纺丝分散液的流变学,所生产纤维的机械性能和结构参数与填料的个性化,填料含量以及填料与基体之间的相互作用有关。

更新日期:2020-10-07
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