Archive ouverte HAL - Inelastic deformation of highly aligned dry-spun thermoplastic polyurethane elastomer microfibres

Inelastic deformation of highly aligned dry-spun thermoplastic polyurethane elastomer microfibres

Chin Joo Tan 1 Andri Andriyana 1 Ang Bee Chin 1 Grégory Chagnon 2
2 TIMC-IMAG-BioMMat - Ingénierie Biomédicale et Mécanique des Matériaux
TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble
Abstract : The present study focuses on the fabrication and mechanical responses of highly aligned thermoplastic polyurethane microfibres. A facile dry spinning assisted by an electrical field technique was used to fabricate these microfibres. The surface morphology of the microfibres were inspected under a scanning electron microscope, while their mechanical responses were probed using universal tensile machine. The mechanical tests include uniaxial monotonic, cyclic with increasing maximum strain and relaxation tensile tests using two different strain rates: 0.1 s-1 and 0.001 s-1. According to the surface morphology study, the fibres are highly aligned with the diameter of 2.80 ± 0.06 μm and without beads. As for mechanical tests, the fibres show inelastic mechanical responses such as hysteresis, stress-softening, stress relaxation and residual strain. Except for its nearly linear stress-strain response before reaching ultimate tensile strength, it appears that the thermoplastic polyurethane elastomer microfibres exhibit general features commonly found in bulk elastomers. The findings in this study are expected to provide a basis for the modelling of the mechanical behaviours of elastomer fibres in the future.
Type de document :
Article dans une revue
Materials Research Express, IOP Publishing Ltd, 2018, 5 (12), pp.125301
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https://hal.archives-ouvertes.fr/hal-01974091
Contributeur : Grégory Chagnon <>
Soumis le : mardi 8 janvier 2019 - 15:38:42
Dernière modification le : jeudi 17 janvier 2019 - 18:52:17

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  • HAL Id : hal-01974091, version 1

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Chin Joo Tan, Andri Andriyana, Ang Bee Chin, Grégory Chagnon. Inelastic deformation of highly aligned dry-spun thermoplastic polyurethane elastomer microfibres. Materials Research Express, IOP Publishing Ltd, 2018, 5 (12), pp.125301. 〈hal-01974091〉

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