| Project/Area Number |
16K14001
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Polymer chemistry
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
Jinnai Hiroshi 東北大学, 多元物質科学研究所, 教授 (20303935)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
樋口 剛志 東北大学, 多元物質科学研究所, 助教 (50547304)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | 高分子物性 / 大気圧走査電子顕微鏡 / ブロック共重合体 / 自己組織化 |
|---|
| Outline of Final Research Achievements |
We have studied self-assembling processes of block copolymers from solution state. The inset and initial stage of microphase-separation from substrate as the solvent evaporates were directly observed by a special type of scanning electron microscopy, called atmospheric scanning electron microscopy (ASEM). The block copolymer solution in atmospheric condition was separated from electron optics which is in high vacuum by 100 nm thick silicon nitride. The structure formation was observed from the bottom of the sample container. It was found that Poly(styrene-b-ferrocenyldimethylsilane) (PS-b-PFS) had enough electron density difference to produce contrast under ASEM. The poly(styrene-b-dimethylsiloxane), which is quite often used in self-assembling studies, showed no contrast under ASEM. The onset of the phase separation during the casting process was surprisingly late, only a few minutes before the complete evaporation of the solvent.
|
