| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
신진연구자 특별 심포지움 (영어발표) |
| 제목 |
Crystallization in Ordered Polydisperse Polyolefin Block Copolymers |
| 초록 |
The melt and solid-state morphologies of polydisperse olefin diblock and multiblock copolymers, synthesized via chain shuttling polymerization, were examined using 2D synchrotron small-angle (SAXS) and wide-angle X-ray scattering (WAXS). When comparing the domain spacings of the polydisperse block copolymers to those of their near-monodisperse counterparts, significant domain swelling was observed in both the olefin diblocks (3x increase) and multiblocks (5x increase), attributed to interblock phase mixing resulting from the large polydispersity. The extensive mixing between the hard and soft blocks also result in the observation of “pass-through” crystallization, where short hard blocks dissolved in the soft-block-rich domains allow the hard block crystallization to proceed across the lamellar domain interfaces without destroying the preexisting microdomain morphology. |
| 저자 |
Sheng Li1, Richard A. Register2, Phillip D. Hustand3, Brian G. Landes4, Jeffrey D. Weinhold3
|
| 소속 |
1KAIST, 2Princeton Univ., 3Core R&D, 4The Dow Chemical Company |
| 키워드 |
Block copolymer; polydispersity; crystallization
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| E-Mail |
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