The effect of end-tabbing methods on the tensile properties of electro-spun highly aligned PAN nano-fibres

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Polymer Testing Pub Date : 2024-11-15 DOI:10.1016/j.polymertesting.2024.108645

Siheng Shao, Surya D. Pandita, Yuting Liu, Boru An, Theresa Morris, Tao Ma, Gerard F. Fernando

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Abstract

A novel electro-spinning method was used to produce highly aligned polyacrylonitrile (PAN) nano-fibre arrays. The tensile properties of the aligned fibres were investigated where three different adhesives were used in the end-tabs, namely, a photo-curable UV resin, super-glue and double-sided adhesive tape. The photo-curable UV adhesive and the super-glue were effective in enabling thorough impregnation of the nano-fibre arrays. However, the UV-resin offered greater control with regard to maintaining the impregnated area to within the end-tab region. On inspecting the stress/strain plots, it was concluded that the load-transfer from the end-tabs with the UV-adhesive was comparatively more uniform, repeatable and efficient. The ultimate tensile strength for the UV-adhesive, super-glue and double-sided adhesive tape were 76.71 ± 3.34, 68.80 ± 4.41 and 67.38 ± 2.21 MPa respectively and the Young's moduli were 4.05 ± 1.17, 2.50 ± 0.53 and 1.86 ± 0.53 GPa respectively. The failure strains for the test specimens with the three end-tab resins were similar and ranged between 22.46 ± 2.88 % and 23.73 ± 2.23 %. A phenomenological tensile model was applied to assess the tensile properties of the electro-spun PAN nano-fibres. The stress and stiffness calculated using the phenomenological tensile model were in agreement with the experimentally derived tensile data.

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采用一种新型电纺丝方法生产出高度排列整齐的聚丙烯腈（PAN）纳米纤维阵列。对排列整齐的纤维的拉伸性能进行了研究，并在端片中使用了三种不同的粘合剂，即光固化紫外线树脂、超级胶水和双面胶带。光固化紫外线粘合剂和超级胶水能有效地彻底浸渍纳米纤维阵列。不过，紫外线树脂在将浸渍区域保持在端头区域内方面的控制能力更强。通过检查应力/应变图，可以得出结论：使用紫外线粘合剂的端片的载荷转移相对更加均匀、可重复和高效。紫外线粘合剂、超级胶水和双面胶带的极限拉伸强度分别为 76.71 ± 3.34、68.80 ± 4.41 和 67.38 ± 2.21 兆帕，杨氏模量分别为 4.05 ± 1.17、2.50 ± 0.53 和 1.86 ± 0.53 GPa。使用三种端片树脂的试样的破坏应变相似，介于 22.46 ± 2.88 % 和 23.73 ± 2.23 % 之间。应用现象学拉伸模型评估了电纺 PAN 纳米纤维的拉伸特性。使用现象学拉伸模型计算出的应力和刚度与实验得出的拉伸数据一致。

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.