Preparation and characterization of in situ polymerized cyclic butylene terephthalate/graphene nanocomposites

Gábor Balogh, Sándor Hajba, József Karger-Kocsis, Tibor Czigány

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Graphene-reinforced cyclic butylene terephthalate (CBT) matrix nanocomposites were prepared and characterized by mechanical and thermal methods. These nanocomposites containing different amounts of graphene (up to 5 wt%) were prepared by melt mixing with CBT that was polymerized in situ during a subsequent hot pressing. The nanocomposites and the neat polymerized CBT (pCBT) as reference material were subjected to differential scanning calorimetry, dynamical mechanical analysis, thermogravimetrical analysis, and heat conductivity measurements. The dispersion of the grapheme nanoplatelets was characterized by transmission electron microscopy. It was established that the partly exfoliated graphene worked as nucleating agent for crystallization, acted as very efficient reinforcing agent (the storage modulus at room temperature was increased by 39 and 89 % by incorporating 1- and 5-wt% graphene, respectively). Graphene incorporation markedly enhanced the heat conductivity but did not influence the TGA behavior, except the ash content, due to the not proper exfoliation except the ash content.

Original languageEnglish
Pages (from-to)2530-2535
Number of pages6
JournalJournal of Materials Science
Volume48
Issue number6
DOIs
Publication statusPublished - Mar 1 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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