Morphological, thermal, and electrical characterization of syndiotactic polypropylene/multiwalled carbon nanotube composites

E. Pollatos, E. Logakis, P. Chatzigeorgiou, V. Peoglos, I. Zuburtikudis, M. Gjoka, K. Viras, P. Pissis

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

In this work, syndiotactic polypropylene/multiwalled carbon nanotubes (MWCNT) nanocomposites, in various concentrations, were produced using melt mixing. The influence of the addition of MWCNT on the morphology, crystalline form, and the thermal and electrical properties of the polymer matrix was studied. To that aim, scanning electron microscopy, Raman spectroscopy, X-ray diffraction, differential scanning calorimetry, and dielectric relaxation spectroscopy were employed. Significant alterations of both the crystallization behavior and the thermal properties of the matrix were found on addition of the carbon nanotubes: conversion of the disordered crystalline form I to the ordered one, increase of the crystallization temperature and the degree of crystallinity, and decrease of the glass transition temperature and the heat capacity jump. Finally, the electrical percolation threshold was found between 2.5-3.0 wt.% MWCNT. For comparison purposes, the results of the system studied here are also correlated with the findings from a previous work on the isotactic polypropylene/MWCNT system.

Original languageEnglish
Pages (from-to)1044-1056
Number of pages13
JournalJournal of Macromolecular Science, Part B: Physics
Volume49
Issue number5
DOIs
Publication statusPublished - Sep 2010

Keywords

  • carbon nanotubes
  • electrical properties
  • morphology
  • nanocomposites
  • syndiotactic polypropylene
  • thermal properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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