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 language | English (US) |
|---|---|
| Title of host publication | Topical Conference on New Advances in Polymer Characterization 2008 |
| Pages | 37-40 |
| Number of pages | 4 |
| State | Published - Dec 1 2008 |
| Event | Topical Conference on New Advances in Polymer Characterization 2008 - Wilmington, DE, United States Duration: Oct 13 2008 → Oct 14 2008 |
Publication series
| Name | Topical Conference on New Advances in Polymer Characterization 2008 |
|---|
Other
| Other | Topical Conference on New Advances in Polymer Characterization 2008 |
|---|---|
| Country | United States |
| City | Wilmington, DE |
| Period | 10/13/08 → 10/14/08 |
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Keywords
- Carbon nanotubes
- Dispersion
- Polypropylene
- Solid-state shear pulverization
- Specific energy
ASJC Scopus subject areas
- Polymers and Plastics
Cite this
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Fabrication and characterization of polymer/multiwall carbon nanotube nanocomposites made via a two-step process of solid-state shear pulverization followed by melt mixing. / Masuda, Jun'ichi; Torkelson, John M.
Topical Conference on New Advances in Polymer Characterization 2008. 2008. p. 37-40 (Topical Conference on New Advances in Polymer Characterization 2008).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Fabrication and characterization of polymer/multiwall carbon nanotube nanocomposites made via a two-step process of solid-state shear pulverization followed by melt mixing
AU - Masuda, Jun'ichi
AU - Torkelson, John M
PY - 2008/12/1
Y1 - 2008/12/1
N2 - 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.
AB - 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.
KW - Carbon nanotubes
KW - Dispersion
KW - Polypropylene
KW - Solid-state shear pulverization
KW - Specific energy
UR - http://www.scopus.com/inward/record.url?scp=70449106455&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70449106455&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:70449106455
SN - 9781615670345
T3 - Topical Conference on New Advances in Polymer Characterization 2008
SP - 37
EP - 40
BT - Topical Conference on New Advances in Polymer Characterization 2008
ER -