Naslov
Preparation of polystyrene nanocomposites with functionalized carbon nanotubes by melt and solution mixing: Investigation of dispersion, melt rheology, electrical and thermal properties

Autori
Faraguna, Fabio ; Pötschke, Petra ; Pionteck, Jürgen

Izvornik
Polymer (0032-3861) 132 (2017); 325-341

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
polystyrene nanocomposite ; MWCNT functionalization ; MWCNT dispersion ; electrical properties ; rheology

Sažetak
Nanocomposites of polystyrene (PS) varying in molecular mass (PS1, PS2) and differently functionalized multiwalled carbon nanotubes (MWCNTs, 0.1–5.0 wt%) were prepared by melt and solution mixing. As fillers, pristine MWCNTs, phenyl propane ester and polystyrene functionalized MWCNTs as well as an in situ synthesized polystyrene masterbatch (DPS) were used. Functionalization procedure and characterization of functionalized MWCNTs are described. Dispersion of MWCNTs as well as electrical, thermal and rheological properties of the nanocomposites were analyzed. Independent of the preparation procedure, the best MWCNT macrodispersion is achieved using DPS. When using solution mixing, the difference in macrodispersion between different MWCNTs is less pronounced in comparison to melt mixing. Solution mixed nanocomposites exhibit lower percolation thresholds in a similar range (PS1 < 0.20 wt% ; PS2 < 0.30 wt%) whereas among melt mixed nanocomposites DPS shows the lowest electrical percolation threshold (PS1 0.27 wt% ; PS2 0.49 wt%).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

Napomena
Glavni autor: Fabio Faraguna

POVEZANOST RADA