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Influence of the Fibrous Network Architecture on the Mechanical Properties of Melt-Blown Non-Woven Thermoplastic Polyurethane Fabrics.

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Title: Influence of the Fibrous Network Architecture on the Mechanical Properties of Melt-Blown Non-Woven Thermoplastic Polyurethane Fabrics.
Authors: Wang, Qunsong1,2 (AUTHOR), Lu, Ming2 (AUTHOR), Zhou, Rimin1,2 (AUTHOR), Li, Mingkun2 (AUTHOR) limingkun@kingfa.com.cn, Ding, Chao2 (AUTHOR) dingchao@kingfa.com.cn, Liang, Yun1 (AUTHOR)
Source: Polymers (20734360). Apr2026, Vol. 18 Issue 7, p857. 15p.
Subjects: Nonwoven textiles, Polyurethane elastomers, Fibers, Textile fibers, Mechanical behavior of materials, Porosity, Finite element method
Abstract: Melt-blown thermoplastic polyurethane (TPU) non-woven fabrics are increasingly valued in biomedical and industrial applications due to their elasticity, breathability, and skin compatibility. However, the relationship between their microscale fibrous network architecture and macroscopic properties remains insufficiently understood. This study investigates the influence of fiber diameter, porosity, and grammage on the mechanical properties of TPU non-woven fabrics through experimental characterization and finite element modeling (FEM). TPU pellets were melt-blown into fabrics with controlled structural variations, and their properties were analyzed using scanning electron microscopy (SEM), tensile testing, and air permeability measurements. Multiple linear regression (MLR) revealed that increased grammage predominantly enhances tensile strength (transverse β = 0.764, longitudinal β = 0.899), while fiber diameter and porosity affect transverse and longitudinal elongation in a different way. FEM simulations based on three-dimensional fiber networks further validated these relationships, demonstrating that increased porosity (e.g., from 85% to 92.5%) reduces tensile stress by over 50%, whereas larger fiber diameters (e.g., from 2 μm to 14 μm) decrease elongation at break by approximately 70%. By integrating experimental and computational approaches, this research provides valuable insights for optimizing TPU non-woven fabrics to meet specific performance requirements in wound dressings and other advanced applications. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Influence of the Fibrous Network Architecture on the Mechanical Properties of Melt-Blown Non-Woven Thermoplastic Polyurethane Fabrics.
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Apr2026, Vol. 18 Issue 7, p857. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Nonwoven+textiles%22">Nonwoven textiles</searchLink><br /><searchLink fieldCode="DE" term="%22Polyurethane+elastomers%22">Polyurethane elastomers</searchLink><br /><searchLink fieldCode="DE" term="%22Fibers%22">Fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Textile+fibers%22">Textile fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Melt-blown thermoplastic polyurethane (TPU) non-woven fabrics are increasingly valued in biomedical and industrial applications due to their elasticity, breathability, and skin compatibility. However, the relationship between their microscale fibrous network architecture and macroscopic properties remains insufficiently understood. This study investigates the influence of fiber diameter, porosity, and grammage on the mechanical properties of TPU non-woven fabrics through experimental characterization and finite element modeling (FEM). TPU pellets were melt-blown into fabrics with controlled structural variations, and their properties were analyzed using scanning electron microscopy (SEM), tensile testing, and air permeability measurements. Multiple linear regression (MLR) revealed that increased grammage predominantly enhances tensile strength (transverse β = 0.764, longitudinal β = 0.899), while fiber diameter and porosity affect transverse and longitudinal elongation in a different way. FEM simulations based on three-dimensional fiber networks further validated these relationships, demonstrating that increased porosity (e.g., from 85% to 92.5%) reduces tensile stress by over 50%, whereas larger fiber diameters (e.g., from 2 μm to 14 μm) decrease elongation at break by approximately 70%. By integrating experimental and computational approaches, this research provides valuable insights for optimizing TPU non-woven fabrics to meet specific performance requirements in wound dressings and other advanced applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/polym18070857
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        Text: English
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        Type: general
      – SubjectFull: Polyurethane elastomers
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      – SubjectFull: Fibers
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      – SubjectFull: Textile fibers
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      – SubjectFull: Mechanical behavior of materials
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      – SubjectFull: Porosity
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      – SubjectFull: Finite element method
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      – TitleFull: Influence of the Fibrous Network Architecture on the Mechanical Properties of Melt-Blown Non-Woven Thermoplastic Polyurethane Fabrics.
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            NameFull: Wang, Qunsong
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            NameFull: Lu, Ming
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              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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