Melt-mixed PP/MWCNT composites: Influence of CNT incorporation strategy and matrix viscosity on filler dispersion and electrical resistivity
Poetschke P, Mothes F, Krause B, Voit B (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 11
Article Number: 189
Journal Issue: 2
Abstract
Small-scale melt mixing was performed for composites based on polypropylene (PP) and 0.5-7.5 wt % multiwalled carbon nanotubes (MWCNT) to determine if masterbatch (MB) dilution is a more effective form of nanofiller dispersion than direct nanotube incorporation. The methods were compared using composites of five different PP types, each filled with 2 wt % MWCNTs. After the determination of the specific mechanical energy (SME) input in the MB dilution process, the direct-incorporation mixing time was adjusted to achieve comparable SME values. Interestingly, the electrical resistivity of MB-prepared samples with 2 wt % MWCNTs was higher than that of those prepared using direct incorporation-despite their better dispersion-suggesting more pronounced MWCNT shortening in the two-step procedure. In summary, this study on PP suggests that the masterbatch approach is suitable for the dispersion of MWCNTs and holds advantages in nanotube dispersion, albeit at the cost of slightly increased electrical resistivity.
Involved external institutions
Germany (DE)How to cite
APA:
Poetschke, P., Mothes, F., Krause, B., & Voit, B. (2019). Melt-mixed PP/MWCNT composites: Influence of CNT incorporation strategy and matrix viscosity on filler dispersion and electrical resistivity. Polymers, 11(2). https://doi.org/10.3390/polym11020189
MLA:
Poetschke, Petra, et al. "Melt-mixed PP/MWCNT composites: Influence of CNT incorporation strategy and matrix viscosity on filler dispersion and electrical resistivity." Polymers 11.2 (2019).
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