| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Microphase Separation and Crystallization in Methyl methacrylate-pentafluorostyrene-methyl methacrylate Triblock Copolymer/Poly(vinylidene fluoride) Blends |
| 초록 |
PMMA-PPFS-PMMA which had a 0.66 wt fraction of the PMMA was mixed with a low molecular weight PVDF. The microstructure of the blends was investigated as a function of fraction of PVDF by small-angle X-ray scattering and transmission electron microscopy. The morphological change from a lamellar to a PPFS-sphere occurred with increasing PVDF content. The blends with 30 wt % PVDF had a higher ordered lamellar structure at 180 ℃ due to the increase of the mobility of PMMA chain induced by the lower Tg component such as PVDF melt. For the blends with ≥ 50 wt % PVDF, visible PVDF crystallites were observed with small-angle light scattering and polarized optical microscopy. The crystallization rate of PVDF in the blends was slower than that of neat PVDF. It indicates that the microstructure of the blends provided spatial constraint to crystal growth. |
| 저자 |
최미주, 이광희
|
| 소속 |
인하대 |
| 키워드 |
PVDF; SAXS; microphase separation; crystallization
|
| E-Mail |
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