Influence of carbon nanotubes on polyamide properties

In this study, the addition of carbon nanotubes (MWCNT) and modified carbon nanotubes (MWCNT-COOH) in the range of 0.5 wt. % to 5 wt. % in polyamide (PA) obtained as a residue upon 3D printing, was investigated. PA and nanocomposite samples were prepared by melt mixing. PA/MWCNT and PA/MWCNT-COOH na...

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Permalink: http://skupni.nsk.hr/Record/nsk.NSK01001068879/Details
Matična publikacija: Chemical & biochemical engineering quarterly (Online)
33 (2019), 3 ; str. 337-346
Glavni autori: Lučić Blagojević, Sanja (Author), Šorgo, Nicol, Buhin Šturlić, Zrinka
Vrsta građe: e-članak
Jezik: eng
Predmet:
Online pristup: https://doi.org/10.15255/CABEQ.2018.1567
Chemical & biochemical engineering quarterly (Online)
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100 1 |a Lučić Blagojević, Sanja  |4 aut 
245 1 0 |a Influence of carbon nanotubes on polyamide properties  |h [Elektronička građa] /  |c Sanja Lučić Blagojević, Nicol Šorgo, Zrinka Buhin Šturlić. 
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504 |a Bibliografija: 25 jed. 
504 |a Summary. 
520 |a In this study, the addition of carbon nanotubes (MWCNT) and modified carbon nanotubes (MWCNT-COOH) in the range of 0.5 wt. % to 5 wt. % in polyamide (PA) obtained as a residue upon 3D printing, was investigated. PA and nanocomposite samples were prepared by melt mixing. PA/MWCNT and PA/MWCNT-COOH nanocomposites were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), THB thermal conductivity determination method, electrochemical impedance spectroscopy (EIS), and tensile test. Results of DSC analysis showed that both types of carbon nanotubes (MWCNTs) acted as nucleation centres of PA matrix, but had no effect on the order of the crystalline structure. Due to the polar nature of the surface and better dispersion, MWCNT-COOH filler accelerated PA crystallization more significantly compared to MWCNT. Due to the presence of nanofiller, the PA chains had limited motion space, which interfered with the crystallization process of the matrix. The thermal stability of the PA matrix increased with the addition of both MWCNT and MWCNT-COOH fillers. Higher thermal conductivity was achieved with the addition of MWCNT-COOH filler compared to the addition of MWCNT. The results of the tensile test showed that with the addition of both types of MWCNT fillers in the PA matrix, the modulus of elasticity and yield stress had reduced, but the yield strain increased. Results of the EIS showed that MWCNT nanofiller had not changed the electrical conductivity regardless of modification. 
653 0 |a Nanokompoziti  |a Polimerni nanokompoziti  |a Ugljikove nanocjevčice  |a Poliamid  |a Električna vodljivost  |a Toplinska svojstva  |a Mehanička svojstva  |a Industrijska primjena 
700 1 |a Šorgo, Nicol  |4 aut 
700 1 |a Buhin Šturlić, Zrinka  |4 aut 
773 0 |t Chemical & biochemical engineering quarterly (Online)  |x 1846-5153  |g 33 (2019), 3 ; str. 337-346  |w nsk.(HR-ZaNSK)000622963 
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