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Preparation and Characterization of High-Performance Poly(trimethylene terephthalate) Nanocomposites Reinforced with Exfoliated Graphite

✍ Scribed by Meilu Li; Young Gyu Jeong

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
671 KB
Volume
296
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

To improve the physical properties of poly(trimethylene terephthalate) (PTT), a series of nanocomposites based on PTT and exfoliated graphite (EG) are prepared via melt compounding and their structures, thermal stabilities, mechanical, and electrical properties are studied. XRD and SEM show that graphene nanosheets are well dispersed in the PTT matrix without forming crystalline aggregates even at high EG content. Thermal stability and dynamic mechanical moduli of the nanocomposites are substantially improved by EG addition, and a pronounced increase in electrical volume resistivity from an insulator to almost a semiconductor is observed with increasing EG content. The electrical percolation threshold of the nanocomposites is found to be formed at the EG concentration between 3.0 and 5.0 wt.‐%.magnified image

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