| Project/Area Number |
17350102
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Polymer/Textile materials
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
NOJIMA Shuichi Tokyo Institute of Technology, Graduate School of Engineering, Associate Professor (20156194)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ISHIZONE Takashi Tokyo Institute of Technology, Graduate School of Engineering, Associate Professor (60212883)
|
|---|
| Project Period (FY) |
2005 – 2007
|
| Project Status |
Completed (Fiscal Year 2007)
|
| Budget Amount *help |
¥14,710,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥510,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2006: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2005: ¥9,700,000 (Direct Cost: ¥9,700,000)
|
|---|
| Keywords | Polymer structure and properties / Nano-materials / Crystalline block copolymers / Microphase-separated structure / Crystallization / Main-chain cleavage / Spatial confinement / 結晶性-非晶性2元ブロック共重合体 |
|---|
| Research Abstract |
In this research project, we synthesized various crystalline-amorphous and crystalline-crystalline diblock copolymers in order to quantitatively investigate the relationship between the condition of "spatial confinement" and the crystallization behavior of constituent polymers (block chains or homopolymers). Furthermore, we created the systems in which crystalline homopolymers are confined within the various nanodomains (spheres or cylinders) to clarify the effect of" molecular confinement" on the crystallization behavior and also final morphology of polymers.
It was found that the spatial confinement seriously affects the crystallization of constituent polymers. In particular, the nanodomains consisting of crystallized lamellae in double crystalline diblocks showed an extremely specific spatial confinement against the crystallization, which could not be observed in the crystallization of microphase-separated crystalline-amorphous diblock copolymers. The molecular confinement was found to be less effective than the spatial confinement for the crystallization. However, the molecular confinement changed significantly the crystallization behavior and final morphology formed in the system. In particular, we found that it accelerated the initial crystallization rate of the tethered polymers (or block chains). These experimental results are important from the viewpoint of fundamental research on polymer crystallization. In addition, the present results are useful for the morphological control of polymer material systems.
|
