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Journal of Polymer Engineering

Editor-in-Chief: Grizzuti, Nino

IMPACT FACTOR 2017: 0.778

CiteScore 2017: 0.77

SCImago Journal Rank (SJR) 2017: 0.244
Source Normalized Impact per Paper (SNIP) 2017: 0.551

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Volume 33, Issue 8


Effect of processing technology on the morphological, mechanical and electrical properties of conductive polymer composites

Anett Király
  • Faculty of Mechanical Engineering, Department of Polymer Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3, Hungary
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Ferenc Ronkay
  • Corresponding author
  • Faculty of Mechanical Engineering, Department of Polymer Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3, Hungary
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2013-09-12 | DOI: https://doi.org/10.1515/polyeng-2013-0038


Conducting carbon/polypropylene (PP) and carbon/poly(butylene terephthalate) (PBT) composites containing crystalline natural graphite and carbon black (CB) were prepared by compression and injection molding. The effect of the processing technology on the electrical, mechanical, and morphological properties was investigated. Determination of the constant torque at the end of the mixing process and differential scanning calorimetric (DSC) measurements showed that graphite had better connectivity with the more polar matrix (PBT) than with the less polar one (PP). Scanning electron microscopy (SEM) studies showed that compression molding results in a homogeneous structure, while injection molding results in a skin-core structure with different orientations. Layered electrical conductivity studies showed that the electrical conductivity of the compression molded samples did not change along the thickness of the sample, while that of the injection molded samples changed throughout the material, which is due to the different structures developed with each type of processing.

Keywords: carbon black; compression molding; conductive polymer composite; graphite; injection molding


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About the article

Corresponding author: Ferenc Ronkay, Faculty of Mechanical Engineering, Department of Polymer Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3, Hungary, e-mail:

Received: 2013-02-23

Accepted: 2013-08-15

Published Online: 2013-09-12

Published in Print: 2013-11-01

Citation Information: Journal of Polymer Engineering, Volume 33, Issue 8, Pages 691–699, ISSN (Online) 2191-0340, ISSN (Print) 0334-6447, DOI: https://doi.org/10.1515/polyeng-2013-0038.

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