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Preparation and characterization of highly electrically and thermally conductive polymeric nanocomposites

Tavman I., Çeçen V., Özdemir I., Turgut A., Krupa I., Omastova M., Novak I.

Archives of Materials Science and Engineering

2009

Vol. 40, nr 2

84-88

Purpose: The conducting polymers and polymeric composites have attracted considerable attention in recent years because of their potential applications in advanced technologies, for example, in antistatic coatings, electromagnetic shielding. Design/methodology/approach: In this study the conductive fillers were expanded graphite (EG) and untreated graphite (UG), the base material was ethylene- vinyl acetate copolymer (EVA). Nanocomposites containing up to 30 volume % of filler material were prepared by mixing them in a Brabender Plasticorder. Findings: The increase in thermal conductivity was more pronounced for EVA-UG nanocomposites than EVA-EG nanocomposites. Practical implications: The recent advancement of nano-scale compounding technique enables the preparation of highly electrically conductive polymeric nanocomposites with very low loading of conductive fillers. Compared with traditional composites, nanocomposites may offer enhanced physical features such as increased stiffness, strength, barrier properties and heat resistance, without loss of impact strength in a very broad range of common synthetic or natural polymers. Originality/value: The introduction of electrically conductive fillers such as graphite, carbon black, metal and metal oxide powders into the polymeric matrix is a promising approach to fabricate electrically conductive polymeric materials.