A Model to Estimate the Stress-Strain Behavior of Polyimide Electrospun Fabric

Document Type : Research Paper

Authors

1 Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran

2 Department of Energy Storage, Institute of Mechanics, Shiraz, Iran

Abstract

Nonwoven structures consist of fibers with different orientations. Studying the mechanical behavior of nonwoven materials is very complicated and laborious in terms of the random nature of their constituent fibers. In this study, a suitable approach based on existing models is proposed to predict the stress-strain behavior of electrospun polyimide (PI) non-woven fabric as a function of the volume fraction, orientation distribution, and stress-strain behavior of its constituent fibers. 18 different discrete orientations from 0 to 180 degrees are considered to specify the fiber orientation distribution in the fabric. To avoid difficult and complex experiments on the fibers constituting the nonwoven fabric, the constants and characteristics of the stress- strain curve of a single fiber were determined by fitting the fabric stress- strain curve predicted by the model to the results of the fabric experimental tensile test. The comparison among the predicted stress- strain curves by the model and the experimental results for PI nonwoven fabric in two different loading directions of 0 and 45 degrees shows the validity of the method used in obtaining the stress- strain behavior of the fabric.

Keywords

References

  1. B. Yilmaz, B. Sabuncuoglu, B. Yildirim, V. V. Silberschmidt, A brief review on the mechanical behavior of nonwoven fabrics, Journal of Engineered Fibers and Fabrics, 15 (2020) 1558925020970197.
  2. Bais-Singh, B.C. Goswami, Theoretical Determination of the Mechanical Response of Spun-bonded Nonwovens, The Journal of The Textile Institute, 86(2) (1995) 271–288.
  3. Lee, M. Yanilmaz, O. Toprakci, K. Fu, X. Zhang, A review of recent developments in membrane separators for rechargeable lithium-ion batteries, Energy & Environmental Science, 7(12) (2014) 3857–3886.
  4. Lukić, P. Jovanić, Structural analysis of abrasive composite materials with nonwoven textile matrix, Materials Letters, 58(3-4) (2004) 439–443.
  5. C. Engelmayr, M.S. Sacks, A structural model for the flexural mechanics of nonwoven tissue engineering scaffolds, Journal of Biomechanical Engineering, 128(4) (2006) 610–622.
  6. Rawal, A. Priyadarshi, N. Kumar, S. V. Lomov, I. Verpoest, Tensile behaviour of nonwoven structures: Comparison with experimental results, Journal of Materials Science, 45(24) (2010) 6643–6652.
  7. Yin, Z. Pan, J. Xiong, A tensile constitutive relationship and a finite element model of electrospun nanofibrous mats, Nanomaterials, 8(1) (2018).
  8. Y. Wan, H. Wang, W. Gao, F. Ko, An analysis of the tensile properties of nanofiber mats, Polymer (Guildf), 73 (2015) 62–67.
  9. Ridruejo, C. González, J. Llorca, A constitutive model for the in-plane mechanical behavior of nonwoven fabrics, International Journal of Solids and Structures, 49(17) (2012) 2215–2229.
  10. L. Cox, The elasticity and strength of paper and other fibrous materials, British Journal of Applied Physics, 3(3) (1952) 72–79.
  11. Backer, D.R. Petterson, Some Principles of Nonwoven Fabrics1, Textile Research Journal, 30(9) (1960) 704–711.
  12. Yin, J. Xiong, Finite element analysis of electrospun nanofibrous mats under biaxial tension, Nanomaterials, 8(5) (2018).
  13. Farukh, E. Demirci, H. Ali, M. Acar, B. Pourdeyhimi, V. V. Silberschmidt, Nonwovens modelling: A review of finite-element strategies, The Journal of The Textile Institute, 107(2) (2016) 225–232.
  14. Hou, M. Acar, V. V. Silberschmidt, 2D finite element analysis of thermally bonded nonwoven materials: Continuous and discontinuous models, Computational Materials Science, 46(3) (2009) 700–707.
  15. Bais-Singh, R.D. Anandjiwala, B.C. Goswami, Characterizing Lateral Contraction Behavior of Spunbonded Nonwovens During Uniaxial Tensile Deformation, Textile Research Journal, 66(3) (1996) 131–140.
  16. Lin, W. Li, X. Du, J. Jiang, N. Chen, Structure , property and knittability of polyimide filaments with various strength and modulus, Textile Research Journal, 89(5) (2019) 771-781.
  17. Chen, X. Peng, T. Li, S. Chen, X. Wu, D.H. Reneker, H. Hou, Mechanical characterization of single high-strength electrospun polyimide nanofibres, Journal of Physics D: Applied Physics, 41(2) (2008) 025308.
  18. Lin, W. Li, Y. Tang, H. Shao, C. Su, J. Jiang, N. Chen, High-Performance Polyimide Filaments and Composites Improved by O 2 Plasma Treatment, Polymers, 10(7) (2018) 695.

 

Iranian Journal of Materials Forming
Volume 10, Issue 3
July 2023
Pages 36-42

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