Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

Adanur, Sabit; Liao, Tianyi

doi:10.1177/004051759906901104

Cited by 39 publications

(34 citation statements)

References 17 publications

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“…In the case of PVDF film, three strong peaks at about 850, 1400 and 1200 cm −1 were observed. The former two peaks were due to the C-F stretching vibration, and the latter one was due to the C-C bond of PVDF and the two weak bands appeared at 510 and 486 cm −1 were assigned to the CF2 bending vibration [37,38]. For PVDF/G composite film, G affects the infrared absorption spectra with the appearance of absorption peaks at about 1700, 2000 and 3000 cm show the existence of C-O bond, which is related to the bonds on the surface of G flakes.…”

Section: Spectroscopic Analyses Resultsmentioning

confidence: 99%

“…Therefore, the fibers' diameters and diameter distribution are increased by graphene addition that results in the mechanical strength improving. Since we applied the standard tensile test in all strain-stress experiments the sizes, thicknesses and weights of the examined specimens were equal, and the mass of the electrospun mat did not affect the results [38][39][40][41].…”

Section: Mechanical Strength Analyses Resultsmentioning

confidence: 99%

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Preparation and Characterization of Polyvinylidene Fluoride/Graphene Superhydrophobic Fibrous Films

Karimi-Sabet²,

et al. 2015

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Abstract:A new strategy to induce superhydrophobicity via introducing hierarchical structure into the polyvinylidene fluoride (PVDF) film was explored in this study. For this purpose nanofibrous composite films were prepared by electrospinning of PVDF and PVDF/graphene blend solution as the main precursors to produce a net-like structure. Various spectroscopy and microscopy methods in combination with crystallographic and wettability tests were used to evaluate the characteristics of the synthesized films. Mechanical properties have been studied using a universal stress-strain test. The results show that the properties of the PVDF nanofibrous film are improved by compositing with graphene. The incorporation of graphene flakes into the fibrous polymer matrix changes the morphology, enhances the surface roughness, and improves the hydrophobicity by inducing a morphological hierarchy. Superhydrophobicity with the water contact angle of about 160° can be achieved for the PVDF/graphene electrospun nanocomposite film in comparison to PVDF pristine film.

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Section: Spectroscopic Analyses Resultsmentioning

confidence: 99%

Section: Mechanical Strength Analyses Resultsmentioning

confidence: 99%

Preparation and Characterization of Polyvinylidene Fluoride/Graphene Superhydrophobic Fibrous Films

Karimi-Sabet²,

et al. 2015

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“…Lee and Argon [10] studied the flexibility of crimped fibers in sinusoidal shape subjected to tension. Adanur and Liao [14] adopted the same approximation as Hearle and Newton for fiber curl. More recently, Engelmayr and Sacks [15] were the first to include finite contributions to elastic modulus due to fiber bending in their study of needle-punched nonwoven tissue engineering scaffolds.…”

Section: Introductionmentioning

confidence: 99%

On the importance of fiber curvature to the elastic moduli of electrospun nonwoven fiber meshes

Pai

Boyce

Rutledge

2011

Polymer

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Adequate mechanical integrity of nonwoven fabrics is generally a prerequisite for their practical usage. Nonwoven fiber mats of poly(trimethyl hexamethylene terephthalamide) (PA 6(3)T) with average fiber diameters from 0.1 to 3.6 microns were electrospun from solutions in dimethylformamide and formic acid and their in-plane mechanical response characterized. Two quantitative microstructure-based models that relate the Young's moduli of these fabrics to those of the fibers are considered, one assuming straight fibers and the other allowing for curved fibers. It is found that the model allowing for curved fibers provides a quantitative relationship between the Young's moduli of the mats and those of the fibers themselves. The governing factors that affect the mechanical properties of nonwoven mats are the porosity of the mats, the intrinsic fiber modulus, and the average fiber diameter, curvature (or "curl") and distance between fiber-to-fiber junctions. Especially for submicron diameter fibers, both the intrinsic fiber properties and fiber curvature make important contributions to the mechanical behavior of their nonwoven fabrics.2

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“…Several studies have been conducted to predict the behaviour of such materials by using various numerical modelling techniques. Most of these studies provide a partial solution to the problem of predicting the changes in mechanical behaviour with changes in orientation of constituent fibres [4][5][6], curliness of fibres [7] and manufacturing conditions [8]. A very few studies were performed to develop a finite element model that can simulate the response of nonwoven materials under mechanical loading [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Characterisation and numerical modelling of complex deformation behaviour in thermally bonded nonwovens

Farukh

Demirci

Sabuncuoğlu

et al. 2013

Computational Materials Science

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Abstract:A complex time-dependent deformation and damage behaviour in polymer-based nonwovens are analysed under conditions of multi-stage uniaxial loading. Elastic-plastic and viscous properties of a polypropylene-based fabric are obtained by series of tensile, creep and relaxation tests performed on single fibres extracted from the studied fabric. These properties are implemented in a finite-element (FE) model of nonwoven with direct introduction of fibres according to their actual orientation distribution in order to simulate the rate-dependent deformation up to the onset of damage in thermally bonded nonwovens. The predictions of FE simulations are compared with the experimental data of multi-stage deformation tensile tests and a good agreement is obtained including the mechanisms of deformation. Due to direct modelling of fibres based on their actual orientation distribution and implementation of viscous properties, the model could be extended to other types of polymer-based random fibrous networks.

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Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

Cited by 39 publications

References 17 publications

Preparation and Characterization of Polyvinylidene Fluoride/Graphene Superhydrophobic Fibrous Films

Preparation and Characterization of Polyvinylidene Fluoride/Graphene Superhydrophobic Fibrous Films

On the importance of fiber curvature to the elastic moduli of electrospun nonwoven fiber meshes

Characterisation and numerical modelling of complex deformation behaviour in thermally bonded nonwovens

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