Microphase separation and crystallization in binary blends consisting of poly(methyl methacrylate)-block-polystyrene copolymer and poly(vinylidene fluoride)
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- Title
- Microphase separation and crystallization in binary blends consisting of poly(methyl methacrylate)-block-polystyrene copolymer and poly(vinylidene fluoride)
- Authors
- Kim, JS; Lee, KH; Jo, SM; Ryu, DY; Kim, JK
- Date Issued
- 2004-11
- Publisher
- POLYMER SOC KOREA
- Abstract
- Microdomain structures and crystallization behavior of the binary blends consisting of an asymmetric block copolymer and a homopolymer were investigated using small-angle X-ray scattering (SAXS), optical microscope (OM) and differential scanning calorimetry (DSC). Poly(methyl methacrylate)-block-polystyrene block copolymer (PMMA-b-PS) (weight fraction of PMMA = 0.53) was mixed with low molecular weight poly(vinylidene fluoride) (PVDF). As the PVDF concentration was increased, the morphological change from a lamellar to a cylindrical structure occurred. The crystallization of PVDF significantly disturbed the orientation of the pre-existing microdomain structure, resulting in a poorly ordered morphology. In the blends, PVDF exhibited unique crystallization behavior due to the PMMA block which is preferentially miscible to PVDF and the space constraint imposed by the microdomains.
- Keywords
- block copolymer; homopolymer; blend; microphase separation; crystallization; METHACRYLATE DIBLOCK COPOLYMER; BLOCK-COPOLYMER; METHYL-METHACRYLATE; COMPATIBLE MIXTURES; MOLECULAR-WEIGHT; AMORPHOUS HOMOPOLYMERS; ORDERED STRUCTURE; PHASE-BEHAVIOR; MORPHOLOGY; KINETICS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/24897
- ISSN
- 0379-153X
- Article Type
- Article
- Citation
- POLYMER-KOREA, vol. 28, no. 6, page. 509 - 518, 2004-11
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