Waterborne polymer composites containing hybrid graphene/carbon nanotube filler: Effect of graphene type on properties and performance
Journal
Polymer Composites
Date Issued
2023-05-26
Author(s)
Marija Prosheva, Maryam Ehsani, Yvonne Joseph, Radmila Tomovska, Jadranka Blazhevska Gilev
DOI
10.1002/pc.27483
Abstract
Polymer composites based on graphene/carbon nanotubes (G/CNT) and reduced
graphene oxide/carbon nanotubes (rGO/CNT) were synthetized by in-situ miniemulsion polymerization containing 1 wt% hybrid filler with different ratio of
G and CNT (10:1, 1.1, 1:10). From the hybrid aqueous dispersions obtained in that
way polymer films were spontaneously formed at ambient conditions by water
evaporation. The effect of the type of the graphene filler, G or rGO, on the properties and performance of polymer composites was studied. It was shown that
G/CNT based composites presented improved morphology of the film due to better distribution of the filler and more organized structure of the film than that of
rGO/CNT composites. The surface of the film was much smoother indicating
more deepen filler within the polymer. Consequently, the G/CNT/polymer composites presented one order of magnitude increased Young's moduli and 60%
lower water uptake than the neat polymer. Even though rGO/CNT/polymer composites presented also improved mechanical resistance, their water resistance was
compromised probably due to the presence of hydrophilic functional groups that
facilitated the water diffusion within the film.
graphene oxide/carbon nanotubes (rGO/CNT) were synthetized by in-situ miniemulsion polymerization containing 1 wt% hybrid filler with different ratio of
G and CNT (10:1, 1.1, 1:10). From the hybrid aqueous dispersions obtained in that
way polymer films were spontaneously formed at ambient conditions by water
evaporation. The effect of the type of the graphene filler, G or rGO, on the properties and performance of polymer composites was studied. It was shown that
G/CNT based composites presented improved morphology of the film due to better distribution of the filler and more organized structure of the film than that of
rGO/CNT composites. The surface of the film was much smoother indicating
more deepen filler within the polymer. Consequently, the G/CNT/polymer composites presented one order of magnitude increased Young's moduli and 60%
lower water uptake than the neat polymer. Even though rGO/CNT/polymer composites presented also improved mechanical resistance, their water resistance was
compromised probably due to the presence of hydrophilic functional groups that
facilitated the water diffusion within the film.
Subjects
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