The thermo-mechanical response of PP nanocomposites at high graphene loading. Issue 3 (August 2015)

• Record Type: Journal Article
• Authors: Yang, Kai; Endoh, Maya; Trojanowski, Rebecca; Ramasamy, Radha P.; Gentleman, Molly M.; Butcher, Thomas A.; Rafailovich, Miriam H.
• Is Part Of: Nanocomposites. Volume 1:Issue 3(2015)
• Page Start: 126
• Page End: 137
• Publication Date: 2015-08
• Subjects: Nanocomposites (Materials) -- Periodicals; 620.11805
• DOI: 10.1179/2055033215Y.0000000008
• Languages: German
• ISSNs: 2055-0324

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p> <graphic xlink:href="ark:/27927/pgk2jkk9t3" position="anchor" orientation="portrait" xmlns:xlink="http://www.w3.org/1999/xlink" /> </p> <p>Authors have successfully fabricated polypropylene/graphene nanoplatelets (PP/GNPs), nanocomposites that are thermally conductive, processable, and flame resistant. Thermal conductivity measurements indicated that the thermal coefficient scaled linearly with GNP loading, where a value of 2.0 W m^{− 1} K^{− 1} was achieved at 40 wt-% loading. Tensile measurements indicated that the modulus increased linearly with GNP loading, while the Izod impact, after an initial decrease, remained constant for loadings up to 50 wt-%. Small angle X-ray scattering (SAXS) showed a large decrease in the amount of lamellar structure relative to the neat PP, while wide angle X-ray scattering (WAXS) showed a high degree of crystallinity. These results are consistent with formation of a new type of layered nanocomposite, composed of crystalline PP chains oriented onto layered GNPs.</p> </abstract>