The Influence of Multiple Extrusions on the Properties of High Filled Polylactide/Multiwall Carbon Nanotube Composites

Kaczor, Daniel; Bajer, Krzysztof; Raszkowska-Kaczor, Aneta; Domek, Grzegorz; Madajski, Piotr; Szroeder, Paweł

doi:10.3390/ma15248958

Cited by 5 publications

(1 citation statement)

References 41 publications

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“…In order to get rid of MWCNT agglomerates, the masterbatch obtained after one extrusion was returned to the extruder. More information on the properties of highly filled polymer masterbatches can be found in our previous publications [30,31].…”

Section: Masterbatch Preparationmentioning

confidence: 99%

Screw Extrusion as a Scalable Technology for Manufacturing Carbon Nanotube-Filled Polylactide Composites

Kaczor,

Bajer,

Raszkowska-Kaczor

et al. 2024

Adv. Sci. Technol. Res. J.

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The bottleneck in the widespread use of carbon multiwall nanotube polymer composites is the lack of manufacturing technology that can be used on an industrial scale. In this article, we describe a two-step composite manufacturing technology based on screw extrusion that produces composites characterizing with good dispersion of carbon nanotube filler in polylactide matrix. The first stage involved the fabrication of highly filled masterbatches of 25 wt% of carbon nanotubes. In the second stage, by screw extrusion of the masterbatch mixture with neat polymer, we obtained homogeneous composites with the target filler concentration. The resulting composites with nanotube content ranging from 0.1 to 2 wt%. Mechanical tests including static tension, tensile strength, tensile modulus, three-point bending and impact strength has shown that optimal concentration of the carbon nanotube filler is ranged between 0.5 and 1 wt%. Samples were examined also by SEM, FTIR-ATR, DSC and MFR methods.

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Section: Masterbatch Preparationmentioning

confidence: 99%