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Journal of Materials Science

, Volume 51, Issue 5, pp 2394–2403 | Cite as

Novel low-cost hybrid composites from asphaltene/SBS tri-block copolymer with improved thermal and mechanical properties

  • Hongchao Wu
  • Vijay Kumar Thakur
  • Michael R. Kessler
Original Paper

Abstract

A continuous demanding in raw chemicals cost reduction and processing simplification facilitates the exploration and development of new materials in current plastics industries. In this study, a novel carbonaceous filler material “asphaltene” extracted from inexpensive and abundant asphalt is blended into a thermoplastic elastomer poly(styrene–butadiene–styrene) copolymer (SBS) for the fabrication of hybrid composites at different loadings via melt-compounding. Due to its intrinsic molecular rigidness and desirable compatibility with SBS, the prepared asphaltene/SBS composites displays excellent thermo-mechanical properties by improving the storage modulus in the glassy region by 19 % and in the rubbery region by 305 %, as well as increasing the thermal stability by up to 20 °C. The overall mechanical properties are also enhanced substantially by incorporation of asphaltene into the SBS matrix according to the filler loading in SBS: the tensile strength increased by 2.2 MPa, the maximum elongation by 268 %, Young’s modulus by 214 %, and toughness by 100.4 %. Although the introduced asphaltene inevitably led to a gradual increment in the viscosity of polymer melts from the filler–filler and filler–polymer interactions, homogeneous dispersion of the reinforcing fillers at optimum loading (20–30 wt%) in SBS matrix is still sustained.

Keywords

Asphalt Bitumen Hybrid Composite Filler Loading Glassy Region 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors acknowledge funding for this project from Honeywell Federal Manufacturing & Technologies, LLC.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Hongchao Wu
    • 1
  • Vijay Kumar Thakur
    • 3
  • Michael R. Kessler
    • 1
    • 2
    • 3
  1. 1.Department of Materials Science and EngineeringIowa State UniversityAmesUSA
  2. 2.Ames LaboratoryUS Department of EnergyAmesUSA
  3. 3.School of Mechanical and Materials EngineeringWashington State UniversityPullmanUSA

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