Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering

Saswati Pujari; Wesley Roth Burghardt; Sameer S. Rahatekar; Alan H. Windle; Krzysztof K. Koziol

doi:10.1063/1.2964854

Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering

Saswati Pujari^*, Wesley Roth Burghardt, Sameer S. Rahatekar, Alan H. Windle, Krzysztof K. Koziol

^*Corresponding author for this work

Chemical and Biological Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

We report small-angle x-ray scattering studies of shear-induced alignment of multi-walled carbon nanotube (MWCNT) dispersions. Uncured epoxy was used as a viscous, Newtonian suspending medium, and samples were prepared from 'aligned' MWCNTs using methods previously reported (Rahatekar et al. J Rheol 40:599, 2006); here we emphasize measurements on rather dilute dispersions. Flow-induced alignment was studied in both the flow-gradient (1-2) plane, and the flow-vorticity (1-3) plane using, respectively, annular cone and plate and rotating disk x-ray shear cells. Small-angle x-ray scattering patterns were rendered anisotropic under application of shear flow. Measurements in the 1-2 plane indicate that the average MWCNT orientation direction is intermediate between the flow and gradient directions. Transient measurements of structure evolution enabled by high flux synchrotron radiation allowed study of time-dependent behavior following flow reversal and flow cessation.

Original language	English (US)
Title of host publication	The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting
Pages	806-808
Number of pages	3
Volume	1027
DOIs	https://doi.org/10.1063/1.2964854
State	Published - Sep 11 2008
Event	15th International Congress on Rheology - Monterey, CA, United States Duration: Aug 3 2008 → Aug 8 2008

Other

Other	15th International Congress on Rheology
Country/Territory	United States
City	Monterey, CA
Period	8/3/08 → 8/8/08

Keywords

Carbon nanotubes
Flow induced alignment
X-ray scattering

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2964854

Cite this

@inproceedings{6b84e54fae3f45e69ad9a0b317081d71,

title = "Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering",

abstract = "We report small-angle x-ray scattering studies of shear-induced alignment of multi-walled carbon nanotube (MWCNT) dispersions. Uncured epoxy was used as a viscous, Newtonian suspending medium, and samples were prepared from 'aligned' MWCNTs using methods previously reported (Rahatekar et al. J Rheol 40:599, 2006); here we emphasize measurements on rather dilute dispersions. Flow-induced alignment was studied in both the flow-gradient (1-2) plane, and the flow-vorticity (1-3) plane using, respectively, annular cone and plate and rotating disk x-ray shear cells. Small-angle x-ray scattering patterns were rendered anisotropic under application of shear flow. Measurements in the 1-2 plane indicate that the average MWCNT orientation direction is intermediate between the flow and gradient directions. Transient measurements of structure evolution enabled by high flux synchrotron radiation allowed study of time-dependent behavior following flow reversal and flow cessation.",

keywords = "Carbon nanotubes, Flow induced alignment, X-ray scattering",

author = "Saswati Pujari and Burghardt, {Wesley Roth} and Rahatekar, {Sameer S.} and Windle, {Alan H.} and Koziol, {Krzysztof K.}",

year = "2008",

month = sep,

day = "11",

doi = "10.1063/1.2964854",

language = "English (US)",

isbn = "9780735405493",

volume = "1027",

pages = "806--808",

booktitle = "The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting",

note = "15th International Congress on Rheology ; Conference date: 03-08-2008 Through 08-08-2008",

}

Pujari, S, Burghardt, WR, Rahatekar, SS, Windle, AH & Koziol, KK 2008, Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering. in The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. vol. 1027, pp. 806-808, 15th International Congress on Rheology, Monterey, CA, United States, 8/3/08. https://doi.org/10.1063/1.2964854

Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering. / Pujari, Saswati; Burghardt, Wesley Roth; Rahatekar, Sameer S. et al.
The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. Vol. 1027 2008. p. 806-808.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering

AU - Pujari, Saswati

AU - Burghardt, Wesley Roth

AU - Rahatekar, Sameer S.

AU - Windle, Alan H.

AU - Koziol, Krzysztof K.

PY - 2008/9/11

Y1 - 2008/9/11

N2 - We report small-angle x-ray scattering studies of shear-induced alignment of multi-walled carbon nanotube (MWCNT) dispersions. Uncured epoxy was used as a viscous, Newtonian suspending medium, and samples were prepared from 'aligned' MWCNTs using methods previously reported (Rahatekar et al. J Rheol 40:599, 2006); here we emphasize measurements on rather dilute dispersions. Flow-induced alignment was studied in both the flow-gradient (1-2) plane, and the flow-vorticity (1-3) plane using, respectively, annular cone and plate and rotating disk x-ray shear cells. Small-angle x-ray scattering patterns were rendered anisotropic under application of shear flow. Measurements in the 1-2 plane indicate that the average MWCNT orientation direction is intermediate between the flow and gradient directions. Transient measurements of structure evolution enabled by high flux synchrotron radiation allowed study of time-dependent behavior following flow reversal and flow cessation.

AB - We report small-angle x-ray scattering studies of shear-induced alignment of multi-walled carbon nanotube (MWCNT) dispersions. Uncured epoxy was used as a viscous, Newtonian suspending medium, and samples were prepared from 'aligned' MWCNTs using methods previously reported (Rahatekar et al. J Rheol 40:599, 2006); here we emphasize measurements on rather dilute dispersions. Flow-induced alignment was studied in both the flow-gradient (1-2) plane, and the flow-vorticity (1-3) plane using, respectively, annular cone and plate and rotating disk x-ray shear cells. Small-angle x-ray scattering patterns were rendered anisotropic under application of shear flow. Measurements in the 1-2 plane indicate that the average MWCNT orientation direction is intermediate between the flow and gradient directions. Transient measurements of structure evolution enabled by high flux synchrotron radiation allowed study of time-dependent behavior following flow reversal and flow cessation.

KW - Carbon nanotubes

KW - Flow induced alignment

KW - X-ray scattering

UR - http://www.scopus.com/inward/record.url?scp=51149088935&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=51149088935&partnerID=8YFLogxK

U2 - 10.1063/1.2964854

DO - 10.1063/1.2964854

M3 - Conference contribution

AN - SCOPUS:51149088935

SN - 9780735405493

VL - 1027

SP - 806

EP - 808

BT - The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting

T2 - 15th International Congress on Rheology

Y2 - 3 August 2008 through 8 August 2008

ER -

Shear induced alignment of multi-walled carbon nanotube dispersions via small angle x-ray scattering

Abstract

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this