Influence of chemically and plasma-functionalized carbon nanotubes on high-performance polymeric nanocomposites

G. Ajeesh, Shantanu Bhowmik, Sivakumar Venugopal, Lalit Varshney, Abrar Baluch, Yurim Park, Son Gilsang, Chun Gon Kim

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

This investigation highlights different surface functionalization processes of multi-walled carbon nanotubes (MWCNTs) and their effects on mechanical properties of polyetherimide nanocomposite. Surfaces of MWCNTs were modified by chemical process and by low-pressure plasma process. There is a significant change in physicochemical characteristics of MWCNTs after chemical and low plasma treatment evident from scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy studies. Due to surface modification of CNTs, there is a significant change in surface morphology and increase in oxygen functionalities such as C=O, C-O, and COOH especially evident in low-pressure plasma treatment; however, differential scanning calorimeter and thermogravimetric analysis studies reveal that thermal properties of the composite do not alter as such. There is a significant increase in mechanical properties of high-performance polymeric nanocomposites when surface-functionalized MWCNTs are dispersed in polymeric matrix; however, surface characteristics of the composite remain almost unchanged evident from contact angle and surface energy studies.

Original languageEnglish
Pages (from-to)570-580
Number of pages11
JournalHigh Performance Polymers
Volume28
Issue number5
DOIs
Publication statusPublished - 1 Jun 2016

Keywords

  • Carbon nanotubes
  • interfacial strength
  • photoelectron spectroscopy (XPS)
  • plasma deposition
  • stress transfer

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