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RESEARCH PRODUCT
On the Role of Extensional Flow in Morphology and Property Modifications of MWCNT/Polyamide-Based Fibers
Francesco Paolo La MantiaRossella ArrigoNadka Tzankova DintchevaGiorgio NasilloEugenio Caponettisubject
NanotubeNanocompositeMaterials scienceMorphology (linguistics)Polymers and PlasticsSmall-angle X-ray scatteringGeneral Chemical EngineeringOrganic ChemistryCarbon nanotubelaw.inventionSynthetic fiberlawPolyamideMaterials ChemistryFiberComposite materialdescription
Unfilled and MWCNT-filled PA fibers are prepared and the effect of the extensional flow on their mechanical performance and morphological variations is investigated. Morphological analyses using SEM, TEM, and SAXS suggest a stronger orientation of the MWCNTs along the fiber direction with increasing extensional flow. A particular MWCNT bundle formation in the PA drawn nanocomposite fibers is observed for the first time, and a pull-out of the central nanotube in some bundles is noted. The maintenance of the "shish-kebab" structure upon extensional flow is responsible for the mechanical improvements and dimensional stability in MWCNT-filled PA fibers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-03-01 | Macromolecular Materials and Engineering |