Mechanism of morphological transition from lamellar/perforated layer to gyroid phases
SCIE
SCOPUS
KCI
- Title
- Mechanism of morphological transition from lamellar/perforated layer to gyroid phases
- Authors
- Ahn, JH; Zin, WC
- Date Issued
- 2003-06
- Publisher
- POLYMER SOC KOREA
- Abstract
- We investigated epitaxial relations of phase transitions between the lamellar (L), hexagonally perforated layers (HPL), and gyroid (G) morphologies in styrene-isoprene diblock copolymer (PSI) and polyisoprene (PI)/PSI blend using rheology and small angle X-ray scattering (SAXS) techniques. In HPL --> G transitions, six spot patterns of G phase were observed in two-dimensitional SAXS pattern. On the ocher hand, in direct L --> G transition without appearance of HPL phase, the polydomain patterns of G phase were observed. From present study, it was understood that direct L-G transition of blend may be suppressed by high-energy barrier of transition and mismatches in domain orientation between epitaxially related lattice planes.
- Keywords
- block copolymer; blend; SAXS; HPL; gyroid; phase transition; epitaxial relation; ISOPRENE DIBLOCK COPOLYMER; ORDER-DISORDER TRANSITION; POLYISOPRENE; MELTS; BEHAVIOR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29751
- DOI
- 10.1007/BF03218345
- ISSN
- 1598-5032
- Article Type
- Article
- Citation
- MACROMOLECULAR RESEARCH, vol. 11, no. 3, page. 152 - 156, 2003-06
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