6533b830fe1ef96bd1297c34
RESEARCH PRODUCT
Polyamide-Based Fibers Containing Microwave-Exfoliated Graphite Nanoplatelets
Rossella ArrigoNadka Tzankova DintchevaElisabetta MoriciEugenio CaponettiDelia Francesca Chillura MartinoGiorgio Nasillosubject
Electron energy loss spectroscopy (EELS); Fibers; Nanoparticles; Polyamides; Transmission Electron Microscopy; Chemical Engineering (all); Organic Chemistry; Polymers and PlasticsMaterials sciencePolymers and PlasticsGeneral Chemical EngineeringIntercalation (chemistry)NanoparticlePolyamides02 engineering and technologyElectron energy loss spectroscopy (EELS)010402 general chemistry01 natural sciencesNanoparticlePhase (matter)Chemical Engineering (all)GraphiteFiberFiberComposite materialSettore CHIM/02 - Chimica FisicaNanocompositeOrganic Chemistry021001 nanoscience & nanotechnologyExfoliation joint0104 chemical sciencesElectron energy loss spectroscopy (EELS) Fibers Nanoparticles Polyamides Transmission Electron MicroscopyFibersSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiPolyamidePolyamideNanoparticlesTransmission Electron Microscopy0210 nano-technologydescription
Exfoliated Graphite NanoPlatelets (GNP) have been obtained from Graphite Intercalation Compounds (GIC) subjected to thermal and microwave treatments. Accurate morphological and structural characterization of obtained GNP, performed to compare the degree of exfoliation, show that microwave-treated GNP, exhibit well-exfoliated structure, without any reduction in dimensions compared with the native GIC, differently to the thermal-treated ones. Microwave-treated GNP have been introduced in polyamide (PA) through melt-mixing to obtain nanocomposite that has been subjected to elongational flow, with the aim to improve the nanofiller dispersion and induce GNP orientation along the fiber direction. Upon extensional flow, really, GNP are able to further exfoliate and to align along the flow direction, leading to obtain advanced nanocomposite with excellent mechanical performance. Finally, both GNP loading and stretching lead to a significant variation in crystalline PA phase, detected by thermal and nuclear magnetic resonance analysis in the solid state.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-06-11 |