Effect of Graphene on Polypropylene/Maleic Anhydride- graft-Ethylene-Vinyl Acetate (PP/EVA- g-MA) Blend: Mechanical, Thermal, Morphological, and Rheological Properties

Anish Mathai Varghese, Vengatesan Muthukumaraswamy Rangaraj, Sung Cik Mun, Christopher W. Macosko, Vikas Mittal

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We have studied the effect of thermally reduced graphene oxide (TRG) on the properties of polypropylene/maleic anhydride-graft-ethylene-vinyl acetate (PP/EVA-g-MA) blends. In blends without TRG, EVA-g-MA was dispersed as droplets in PP. At low TRG content, the sheets located in the EVA-g-MA phase. At 5 wt %, the morphology was cocontinuous and the domain sizes of EVA-g-MA were small, while TRG sheets were randomly distributed in the blend. The electrical percolation threshold was between 3 and 5 wt %. Melt rheological analysis revealed that PP/EVA-g-MA/TRG nanocomposites exhibited a viscous behavior of up to 3 wt % but showed a solidlike behavior at 5 wt %. The addition of TRG into PP/EVA-g-MA blend up to 3 wt % enhanced the tensile strength and modulus of PP/EVA-g-MA blend, while not adversely affecting its impact strength. PP/EVA-g-MA/TRG nanocomposites exhibited higher electrical and thermal conductivities compared to PP or PP/EVA-g-MA blends.

Original languageEnglish (US)
Pages (from-to)7834-7845
Number of pages12
JournalIndustrial and Engineering Chemistry Research
Volume57
Issue number23
DOIs
StatePublished - Jun 13 2018

Bibliographical note

Funding Information:
Dr. Vengatesan Muthukumaraswamy Rangaraj and Dr. Vikas Mittal sincerely thank the ADNOC Research and Innovation Centre (Project grant LTR14003) and The Petroleum Institute (as a part of KUST) for the financial support. This work was also supported by the Petroleum Institute through its Joint Polymer Processing Research Program with the University of Minnesota. Parts of this work were carried out at the University of Minnesota Characterization Facility, which receives partial support from the NSF through the MRSEC (DMR-1420013), ERC, MRI, and NNIN programs and the CSE through the OVPR program.

How much support was provided by MRSEC?

  • Shared

Reporting period for MRSEC

  • Period 5

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