Journal of Materials Science

, Volume 45, Issue 15, pp 4054–4057 | Cite as

SC–CO2-assisted rubber dispersion and dynamic vulcanization in blending of PP/EPDM thermoplastic olefin

  • Yang Zhao
  • Han-Xiong Huang
  • Yu-Kun Chen
  • Xiong-Jun Wu
Article

Abstract

Supercritical CO2 (SC–CO2), as a green medium, was induced in the traditional way of preparing polypropylene/ethylene–propylene–diene terpolymer (EPDM) thermoplastic olefin (TPO) by dynamic vulcanization using a twin-screw extruder. The morphology observation suggested that the SC–CO2 not only promoted the rubber dispersion, but also facilitated the rubber dynamic vulcanization; therefore, the crosslinked EPDM particles were more densely distributed in the TPOs prepared with SC–CO2, and existed as a stronger viscoelastic phase restricting the mobility of polymer chains, increasing the complex viscosity and storage modulus and promoting the mechanical properties.

Notes

Acknowledgement

The authors acknowledge the financial support provided by the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institutions of Ministry of Education, People’s Republic of China.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Yang Zhao
    • 1
  • Han-Xiong Huang
    • 1
  • Yu-Kun Chen
    • 1
  • Xiong-Jun Wu
    • 1
  1. 1.Lab for Micro Molding and Polymer RheologySouth China University of TechnologyGuangzhouPeople’s Republic of China

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