Abstract
Polystyrene-block-poly(n-butyl methacrylate) copolymer (PS-b-PnBMA) exhibits only a lower disorder-to-order transition (LDOT), not a closed-loop phase behavior, within an experimentally accessible temperature range. But, when mixed solvents of di-n-octyl phthalate and hexadecane were added to PS-b-PnBMA, this mixture exhibited the upper order-to-disorder transition (UODT) below the degradation temperature as well as an LDOT above the glass transition temperatures of both blocks; thus, a close-loop phase behavior was observed. These results suggest that the closed-loop phase behavior may be a general phenomenon for weakly interacting polystyrene-block-poly(n-alkyl methacrylate) copolymers with LDOT.
| Original language | English |
|---|---|
| Pages (from-to) | 5926-5930 |
| Number of pages | 5 |
| Journal | Macromolecules |
| Volume | 39 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2006 Aug 22 |
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All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry
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Closed-loop phase behavior for weakly interacting block copolymers. / Li, Chaoxu; Lee, Dong Hyun; Kim, Jin Kon; Ryu, Du Yeol; Russell, Thomas P.
In: Macromolecules, Vol. 39, No. 17, 22.08.2006, p. 5926-5930.Research output: Contribution to journal › Article
TY - JOUR
T1 - Closed-loop phase behavior for weakly interacting block copolymers
AU - Li, Chaoxu
AU - Lee, Dong Hyun
AU - Kim, Jin Kon
AU - Ryu, Du Yeol
AU - Russell, Thomas P.
PY - 2006/8/22
Y1 - 2006/8/22
N2 - Polystyrene-block-poly(n-butyl methacrylate) copolymer (PS-b-PnBMA) exhibits only a lower disorder-to-order transition (LDOT), not a closed-loop phase behavior, within an experimentally accessible temperature range. But, when mixed solvents of di-n-octyl phthalate and hexadecane were added to PS-b-PnBMA, this mixture exhibited the upper order-to-disorder transition (UODT) below the degradation temperature as well as an LDOT above the glass transition temperatures of both blocks; thus, a close-loop phase behavior was observed. These results suggest that the closed-loop phase behavior may be a general phenomenon for weakly interacting polystyrene-block-poly(n-alkyl methacrylate) copolymers with LDOT.
AB - Polystyrene-block-poly(n-butyl methacrylate) copolymer (PS-b-PnBMA) exhibits only a lower disorder-to-order transition (LDOT), not a closed-loop phase behavior, within an experimentally accessible temperature range. But, when mixed solvents of di-n-octyl phthalate and hexadecane were added to PS-b-PnBMA, this mixture exhibited the upper order-to-disorder transition (UODT) below the degradation temperature as well as an LDOT above the glass transition temperatures of both blocks; thus, a close-loop phase behavior was observed. These results suggest that the closed-loop phase behavior may be a general phenomenon for weakly interacting polystyrene-block-poly(n-alkyl methacrylate) copolymers with LDOT.
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U2 - 10.1021/ma0610055
DO - 10.1021/ma0610055
M3 - Article
AN - SCOPUS:33748529921
VL - 39
SP - 5926
EP - 5930
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 17
ER -