Closed-loop phase behavior for weakly interacting block copolymers
SCIE
SCOPUS
- Title
- Closed-loop phase behavior for weakly interacting block copolymers
- Authors
- Li, CX; Lee, DH; Kim, JK; Ryu, DY; Russell, TP
- Date Issued
- 2006-08-22
- Publisher
- AMER CHEMICAL SOC
- 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.
- Keywords
- POLYSTYRENE-BLOCK-POLY(N-PENTYL METHACRYLATE) COPOLYMERS; LATTICE CLUSTER THEORY; DIBLOCK COPOLYMERS; VARYING SELECTIVITY; IMMISCIBILITY LOOP; LIQUID-CRYSTAL; POLYMER BLENDS; POLYSTYRENE; SOLVENTS; COMPRESSIBILITY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23868
- DOI
- 10.1021/MA0610055
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 39, no. 17, page. 5926 - 5930, 2006-08-22
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- There are no files associated with this item.
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