Rheological and electrical properties of polycarbonate/multi-walled carbon nanotube composites

Y. T. Sung, M. S. Han, K. H. Song, J. W. Jung, H. S. Lee, C. K. Kum, J. Joo, W. N. Kim

Research output: Contribution to journalArticlepeer-review

156 Citations (Scopus)

Abstract

Rheological and electrical properties of the polycarbonate (PC)/multi-walled carbon nanotube (MWNT) were studied. The MWNT was funtoinalized by treating with the hydrogen peroxide (H2O2). The H2O2 treated MWNT was dried by thermal and freeze drying methods. From the morphological studies, the degree of entanglement of the MWNT was decreased after treating with the H2O2. For the H2O2 treated MWNT (thermal drying), the length of the MWNT was shortened compared that of the H2O2 treated MWNT (freeze drying). The rheological and electrical properties of the PC/MWNT (H2O2 treated) composites increased compared that of the PC/MWNT (untreated) composites. Also, the electrical conductivity showed higher value for the PC/MWNT (H2O2 treated, freeze drying) composites compared that of the PC/MWNT (H2O2 treated, thermal drying) composites. From the results of the morphological, rheological, and electrical properties of the PC/MWNT composites, it is suggested that the electrical and rheological properties of the PC/MWNT composites are affected by the MWNT-MWNT network structure, which is related with the MWNT morphologies such as the degree of aggregation and aspect ratio of the MWNT.

Original languageEnglish
Pages (from-to)4434-4439
Number of pages6
JournalPolymer
Volume47
Issue number12
DOIs
Publication statusPublished - 2006 May 31

Keywords

  • Electrical properties
  • Multi-walled carbon nanotube composite
  • Rheological properties

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Rheological and electrical properties of polycarbonate/multi-walled carbon nanotube composites'. Together they form a unique fingerprint.

Cite this