Abstract
The dispersion of single-walled carbon nanotubes (SWNTs) in a non-polar solvent is controlled with a series of polystyrene-b/ocfe-polybutadiene-b/ocfe- polystyrene (PSBS) block copolymers that contain cholesteryl chloroformate (CC) in side-chains. Esterification of CC with the partially hydroxylated polybutadiene (PB) blocks allows one to tune the polarity of the block copolymers, which decreases with the amount of CC attached. An excellent dispersion of weak polar SWNTs is observed with PSBS that contains a partially hydroxylated PB block. The dispersion is then significantly deteriorated when the amount of non-polar CC moieties increases in the block copolymers. A good dispersion is achieved with a polymer that gives rise to strong SWNT-polymer interactions, which ensures contact of the polymer molecules with the nanotube surface, rather than a good solubility of the polymer dispersant in solvent. The stability of the SWNTs in solution arises from unique needle-like nanowires of the block copolymer aligned perpendicular to the nanotube axis.
| Original language | English |
|---|---|
| Pages (from-to) | 176-182 |
| Number of pages | 7 |
| Journal | Macromolecular Rapid Communications |
| Volume | 28 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2007 Jan 23 |
| Externally published | Yes |
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Keywords
- Block copolymers
- Dispersions
- Microstructure
- Solubility parameter
- SWNT
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
Cite this
Control of SWNT dispersion by block copolymers with a side-chain polarity modifier. / Sung, Jinwoo; Park, Jae Man; Choi, U. Hyeok; Huh, June; Jung, Bumsuk; Min, Byung Gil; Ahn, Cheol Hee; Park, Cheolmin.
In: Macromolecular Rapid Communications, Vol. 28, No. 2, 23.01.2007, p. 176-182.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Control of SWNT dispersion by block copolymers with a side-chain polarity modifier
AU - Sung, Jinwoo
AU - Park, Jae Man
AU - Choi, U. Hyeok
AU - Huh, June
AU - Jung, Bumsuk
AU - Min, Byung Gil
AU - Ahn, Cheol Hee
AU - Park, Cheolmin
PY - 2007/1/23
Y1 - 2007/1/23
N2 - The dispersion of single-walled carbon nanotubes (SWNTs) in a non-polar solvent is controlled with a series of polystyrene-b/ocfe-polybutadiene-b/ocfe- polystyrene (PSBS) block copolymers that contain cholesteryl chloroformate (CC) in side-chains. Esterification of CC with the partially hydroxylated polybutadiene (PB) blocks allows one to tune the polarity of the block copolymers, which decreases with the amount of CC attached. An excellent dispersion of weak polar SWNTs is observed with PSBS that contains a partially hydroxylated PB block. The dispersion is then significantly deteriorated when the amount of non-polar CC moieties increases in the block copolymers. A good dispersion is achieved with a polymer that gives rise to strong SWNT-polymer interactions, which ensures contact of the polymer molecules with the nanotube surface, rather than a good solubility of the polymer dispersant in solvent. The stability of the SWNTs in solution arises from unique needle-like nanowires of the block copolymer aligned perpendicular to the nanotube axis.
AB - The dispersion of single-walled carbon nanotubes (SWNTs) in a non-polar solvent is controlled with a series of polystyrene-b/ocfe-polybutadiene-b/ocfe- polystyrene (PSBS) block copolymers that contain cholesteryl chloroformate (CC) in side-chains. Esterification of CC with the partially hydroxylated polybutadiene (PB) blocks allows one to tune the polarity of the block copolymers, which decreases with the amount of CC attached. An excellent dispersion of weak polar SWNTs is observed with PSBS that contains a partially hydroxylated PB block. The dispersion is then significantly deteriorated when the amount of non-polar CC moieties increases in the block copolymers. A good dispersion is achieved with a polymer that gives rise to strong SWNT-polymer interactions, which ensures contact of the polymer molecules with the nanotube surface, rather than a good solubility of the polymer dispersant in solvent. The stability of the SWNTs in solution arises from unique needle-like nanowires of the block copolymer aligned perpendicular to the nanotube axis.
KW - Block copolymers
KW - Dispersions
KW - Microstructure
KW - Solubility parameter
KW - SWNT
UR - http://www.scopus.com/inward/record.url?scp=33846875010&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846875010&partnerID=8YFLogxK
U2 - 10.1002/marc.200600669
DO - 10.1002/marc.200600669
M3 - Article
AN - SCOPUS:33846875010
VL - 28
SP - 176
EP - 182
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
SN - 1022-1336
IS - 2
ER -