Title :

Influence of Rheological and Thermal Properties of Polymers During Melt Spinning on Bicomponent Fiber Morphology

Author(s) :

Ayad, Esma [Auteur]
Génie et Matériaux Textiles [GEMTEX]
Université de Lille
École nationale supérieure des arts et industries textiles [ENSAIT]
Cayla, Aurélie [Auteur]
Génie et Matériaux Textiles [GEMTEX]
Génie des Matériaux Textiles - ULR 2461 [GEMTEX]
Rault, François [Auteur]
Gonthier, Anne [Auteur]
Leblan, Thierry [Auteur]
Campagne, Christine [Auteur]
Université Lille Nord de France (COMUE)
Ecole nationale supérieure des arts et industries textiles de Roubaix (ENSAIT)
Génie des Matériaux Textiles - ULR 2461 [GEMTEX]
Devaux, Eric [Auteur]
Université Lille Nord de France (COMUE)
Génie et Matériaux Textiles [GEMTEX]
École nationale supérieure des arts et industries textiles [ENSAIT]

Journal title :

Journal of Materials Engineering and Performance

Abbreviated title :

J. Mater. Eng. Perform.

Volume number :

25

Pages :

3296-3302

Publication date :

2019-06-30

ISSN :

1059-9495

English keyword(s) :

bicomponent fibers
DMA
interfacial adhesion
interfacial stability
morphology
rheology

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

Microfibers can be obtained by bicomponent spinning, followed by subsequent mechanical splitting. During process, two materials are coextruded in a die to form a unique complex morphology. Many factors affect these ...
Show more >Microfibers can be obtained by bicomponent spinning, followed by subsequent mechanical splitting. During process, two materials are coextruded in a die to form a unique complex morphology. Many factors affect these morphologies: melt viscosity and difference of crystallization temperature combined with polymers position. Consequently, fiber splitting can be improved by choosing an association of polymers with a stable interface and a poor adhesion. The aim of this study is to understand which intrinsic parameters of polymers allow to enhance bicomponent fiber's splitting. Bicomponent fibers (side-by-side and sheath/core) have been made with two grades of polypropylene and polyamide 6. Instable interface happens when a low-viscosity polymer flows around and encapsulates a high-viscosity material. Possible mechanism responsible of interface deformation is variation of shear rates through the morphology (highest shear rate is at the fiber periphery). DMA analysis reveals that fiber with polyamide as core exceeds the strength of fiber with polyamide as sheath. This increase of strength can be attributed to a better adhesion than fibers with PA6 in sheath. From experimental results, the position combined with the difference crystallization temperature shows poor or strong interface.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSAIT
Junia HEI

Collections :

• Génie des matériaux textiles (GEMTEX) - ULR 2641

Submission date :

2023-06-20T02:34:29Z
2024-02-23T10:20:14Z