Effect of Homopolymer Molecular Weight on Order-Order Transition in Block Copolymer and Homopolymer Blends
SCIE
SCOPUS
- Title
- Effect of Homopolymer Molecular Weight on Order-Order Transition in Block Copolymer and Homopolymer Blends
- Authors
- Lee, SI; Zin, WC; Ahn, JH
- Date Issued
- 2009-12
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Abstract
- The order-order transition temperature (T-OOT) in blends of poly(styrene-b-isoprene-b-styrene) (S-I-S) triblock copolymer and polyisoprene (PI) homopolymer was investigated by using synchrotron small-angle X-ray scattering (SAXS). Pure triblock copolymer undergoes an order-order transition (OOT) from hexagonally ordered cylinder (HEX) to body centered cubic (BCC) phases. In order to investigate the effect of the molecular weight of the added homopolymer on T-OOT of the triblock copolymer, various low-molecular-weight PI homopolymers were studied. The results revealed that T-OOT was affected by the PI molecular weight. T-OOT was reduced for blends having low-molecular-weight PI.
- Keywords
- Block Copolymer; Order-Order Transition; Small-Angle X-ray Scattering; DIBLOCK COPOLYMER; PHASE-BEHAVIOR; COPOLYMER/HOMOPOLYMER BLENDS; SPHERICAL MICRODOMAINS; TRIBLOCK COPOLYMER; BINARY BLENDS; MIXTURES; POLYISOPRENE; DISORDER; POLYSTYRENE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26404
- DOI
- 10.1166/JNN.2009.1783
- ISSN
- 1533-4880
- Article Type
- Article
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, vol. 9, no. 12, page. 7499 - 7502, 2009-12
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