Phase diagrams for the blends of a styrene-butadiene diblock copolymer and a styrene-butadiene random copolymer: Theory
SCIE
SCOPUS
- Title
- Phase diagrams for the blends of a styrene-butadiene diblock copolymer and a styrene-butadiene random copolymer: Theory
- Authors
- Lee, HK; Zin, WC
- Date Issued
- 2000-04-18
- Publisher
- AMER CHEMICAL SOC
- Abstract
- The phase diagram of the blends of a diblock copolymer (A-B) and a random copolymer (ABR) is constructed by the modified confined-chain model developed earlier where the morphology of A-B block copolymer is lamellae and the composition of ABR random copolymer is close to that of A-B. These theoretical results predict a relatively simple phase behavior for the A-B/ABR blends in comparison to the A-B/A blends, A being a homopolymer, studied previously. Unlike in A-B/A blends, the order-disorder transition temperature in A-B/ABR blends is lowered by the addition of the random copolymer regardless of its molecular weight. It is also found that the fraction of ABR solubilized into the A-B is very limited due to the endothermic mixing interaction between ABR and each block of A-B.
- Keywords
- X-RAY-SCATTERING; BLOCK-COPOLYMER; MICROPHASE SEPARATION; HOMOPOLYMER BLENDS; MOLECULAR-WEIGHT; BINARY-MIXTURES; BEHAVIOR; EQUILIBRIA; MISCIBILITY; TRANSITION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21044
- DOI
- 10.1021/ma991827k
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 33, no. 8, page. 2894 - 2900, 2000-04-18
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.