| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
방사광을 이용한 고분자 나노소재 연구 |
| 제목 |
Order-Order and Order-Disorder Transition in Amphiphilic Diblock Copolymer Thin Films using Grazing Incidence X-ray Scattering |
| 초록 |
In this study, we quantitatively investigated the temperature-dependent phase transition behaviors of thin films of an interesting amphiphilic diblock copolymer, poly(ethylene oxide)-b-poly(11-[4-(4-butylphenylazo)phenoxy]undecyl methacrylate) (p(EO)-b-p(MAAZ)) and resulting morphological structures by using synchrotron grazing incidence X-ray scattering (GIXS) and DSC. The quantitative GIXS analysis showed that the diblock copolymer in the homogeneous, isotropic melt state undergoes phase separation near 190 °C and then forms a body-centered cubic (BCC) structure of spherical p(EO) domains in the p(MAAZ) matrix. The BCC structure of spherical p(EO) domains is converted to a hexagonal cylinder structure near 120°C. The resulting hexagonal cylinder structure is very stable below 120 °C. This microscopic hexagonal cylinder structure is retained while the amorphous, liquid phase of the p(EO) cylinders undergoes crystallization near -15°C. |
| 저자 |
안병철1, 윤진환2, 정선영3, 진상우1, 노예철1, 김동민1, 박삼대1, 김진철1, 권원상1, 정정운1, 김경태1, 김미희1, Tomokazu Iyoda4, Hirohisa Yoshida3, 이문호5
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| 소속 |
1포항공과대, 2메사추세츠대, 3동경대, 4동경공대, 5포항공대 |
| 키워드 |
블록공중합체; 스침각입사산란; 상변이
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| E-Mail |
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