Dispersion of multi-walled carbon nanotubes in PDMS/PB blend

Joung Sook Hong, Chongyoup Kim

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this study, the sequential dispersion of multi-walled carbon nanotubes (CNTs) in PDMS/PB (polydimethylsiloxane/polybutene) blends and the change of blend morphology by the dispersion of CNTs were investigated by rheological and morphological observations. The dispersion of CNTs into PDMS/PB blend was accomplished by the dilution of the CNT master (2 wt.% CNT in PDMS) in PDMS/PB blend using an extensional mixer. The morphological study shows that under the extensional flow, CNTs in the dispersed CNT master phase are mainly broken up by tip-streaming and the continuous pinching-off of PDMS drops during morphology evolution enhances the dispersion of CNT. It has been shown that CNTs can be disentangled as in the case of dispersing CNTs in a Boger fluid. Rheological data and TEM observations show that it is not simply a mixing of two phases and the CNTs in the master phase can be dispersed in the single CNT level.

Original languageEnglish
Pages (from-to)955-964
Number of pages10
JournalRheologica Acta
Volume50
Issue number11-12
DOIs
Publication statusPublished - 2011 Dec 1

Fingerprint

Polybutenes
Carbon Nanotubes
Polydimethylsiloxane
Carbon nanotubes
carbon nanotubes
baysilon
polybutene
dispersing
Dilution

Keywords

  • CNT disentanglement
  • Extensional flow
  • Pinch-off mechanism

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Dispersion of multi-walled carbon nanotubes in PDMS/PB blend. / Hong, Joung Sook; Kim, Chongyoup.

In: Rheologica Acta, Vol. 50, No. 11-12, 01.12.2011, p. 955-964.

Research output: Contribution to journalArticle

Hong, Joung Sook ; Kim, Chongyoup. / Dispersion of multi-walled carbon nanotubes in PDMS/PB blend. In: Rheologica Acta. 2011 ; Vol. 50, No. 11-12. pp. 955-964.
@article{0089c74526f14f4bb4b169aca79e537b,
title = "Dispersion of multi-walled carbon nanotubes in PDMS/PB blend",
abstract = "In this study, the sequential dispersion of multi-walled carbon nanotubes (CNTs) in PDMS/PB (polydimethylsiloxane/polybutene) blends and the change of blend morphology by the dispersion of CNTs were investigated by rheological and morphological observations. The dispersion of CNTs into PDMS/PB blend was accomplished by the dilution of the CNT master (2 wt.{\%} CNT in PDMS) in PDMS/PB blend using an extensional mixer. The morphological study shows that under the extensional flow, CNTs in the dispersed CNT master phase are mainly broken up by tip-streaming and the continuous pinching-off of PDMS drops during morphology evolution enhances the dispersion of CNT. It has been shown that CNTs can be disentangled as in the case of dispersing CNTs in a Boger fluid. Rheological data and TEM observations show that it is not simply a mixing of two phases and the CNTs in the master phase can be dispersed in the single CNT level.",
keywords = "CNT disentanglement, Extensional flow, Pinch-off mechanism",
author = "Hong, {Joung Sook} and Chongyoup Kim",
year = "2011",
month = "12",
day = "1",
doi = "10.1007/s00397-011-0581-y",
language = "English",
volume = "50",
pages = "955--964",
journal = "Rheologica Acta",
issn = "0035-4511",
publisher = "Springer Verlag",
number = "11-12",

}

TY - JOUR

T1 - Dispersion of multi-walled carbon nanotubes in PDMS/PB blend

AU - Hong, Joung Sook

AU - Kim, Chongyoup

PY - 2011/12/1

Y1 - 2011/12/1

N2 - In this study, the sequential dispersion of multi-walled carbon nanotubes (CNTs) in PDMS/PB (polydimethylsiloxane/polybutene) blends and the change of blend morphology by the dispersion of CNTs were investigated by rheological and morphological observations. The dispersion of CNTs into PDMS/PB blend was accomplished by the dilution of the CNT master (2 wt.% CNT in PDMS) in PDMS/PB blend using an extensional mixer. The morphological study shows that under the extensional flow, CNTs in the dispersed CNT master phase are mainly broken up by tip-streaming and the continuous pinching-off of PDMS drops during morphology evolution enhances the dispersion of CNT. It has been shown that CNTs can be disentangled as in the case of dispersing CNTs in a Boger fluid. Rheological data and TEM observations show that it is not simply a mixing of two phases and the CNTs in the master phase can be dispersed in the single CNT level.

AB - In this study, the sequential dispersion of multi-walled carbon nanotubes (CNTs) in PDMS/PB (polydimethylsiloxane/polybutene) blends and the change of blend morphology by the dispersion of CNTs were investigated by rheological and morphological observations. The dispersion of CNTs into PDMS/PB blend was accomplished by the dilution of the CNT master (2 wt.% CNT in PDMS) in PDMS/PB blend using an extensional mixer. The morphological study shows that under the extensional flow, CNTs in the dispersed CNT master phase are mainly broken up by tip-streaming and the continuous pinching-off of PDMS drops during morphology evolution enhances the dispersion of CNT. It has been shown that CNTs can be disentangled as in the case of dispersing CNTs in a Boger fluid. Rheological data and TEM observations show that it is not simply a mixing of two phases and the CNTs in the master phase can be dispersed in the single CNT level.

KW - CNT disentanglement

KW - Extensional flow

KW - Pinch-off mechanism

UR - http://www.scopus.com/inward/record.url?scp=81555197135&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81555197135&partnerID=8YFLogxK

U2 - 10.1007/s00397-011-0581-y

DO - 10.1007/s00397-011-0581-y

M3 - Article

AN - SCOPUS:81555197135

VL - 50

SP - 955

EP - 964

JO - Rheologica Acta

JF - Rheologica Acta

SN - 0035-4511

IS - 11-12

ER -