Fabrication and characterization of polymer/multiwall carbon nanotube nanocomposites made via a two-step process of solid-state shear pulverization followed by melt mixing

Jun'ichi Masuda*, John M Torkelson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Two initially heavily entangled multiwall carbon nanotube (MWCNT) systems are well dispersed in polypropylene (PP) by a two-step process of solid-state shear pulverization (SSSP.) followed by melt mixing (MM), and the dispersion and property enhancements are studied as a function of the specific energy input during SSSP. Pulverization of 99/1 wt% PP/MWCNT hybrids with MWCNT diameters of 30-50 nm results very small, loose agglomerates interpenetrated by PP; subsequent MM results in individual tubes dispersed in PP even at relatively low SSSP energy input. When much thinner and more heavily initially entangled MWCNTs with diameters less than 8 nm are used, MWCNT bundles with size up to 500 nm remain even at the highest SSSP energy input. For both systems processed by SSSP followed by MM, the Young's modulus, degradation temperature, and crystallization rates are increased dramatically with increasing SSSP energy input, in accord with better MWCNT dispersion.

Original languageEnglish (US)
Title of host publicationTopical Conference on New Advances in Polymer Characterization 2008
Pages37-40
Number of pages4
StatePublished - Dec 1 2008
EventTopical Conference on New Advances in Polymer Characterization 2008 - Wilmington, DE, United States
Duration: Oct 13 2008Oct 14 2008

Publication series

NameTopical Conference on New Advances in Polymer Characterization 2008

Other

OtherTopical Conference on New Advances in Polymer Characterization 2008
CountryUnited States
CityWilmington, DE
Period10/13/0810/14/08

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Keywords

  • Carbon nanotubes
  • Dispersion
  • Polypropylene
  • Solid-state shear pulverization
  • Specific energy

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Masuda, J., & Torkelson, J. M. (2008). Fabrication and characterization of polymer/multiwall carbon nanotube nanocomposites made via a two-step process of solid-state shear pulverization followed by melt mixing. In Topical Conference on New Advances in Polymer Characterization 2008 (pp. 37-40). (Topical Conference on New Advances in Polymer Characterization 2008).