2007 Fiscal Year Final Research Report Summary
Crystalization behavior of homopolymers confined in spherical nanodomains
| Project/Area Number |
17350102
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
NOJIMA Shuichi Tokyo Institute of Technology, Graduate School of Engineering, Associate Professor (20156194)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIZONE Takashi Tokyo Institute of Technology, Graduate School of Engineering, Associate Professor (60212883)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Polymer structure and properties / Nano-materials / Crystalline block copolymers / Microphase-separated structure / Crystallization / Main-chain cleavage / Spatial confinement |
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| 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.
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[Presentation] Crystallization behavior of homopolymers confined within microphase-separated structure2007
Author(s)
S., Nojima, Y., Ohguma, S., Namiki, T., Ishizone, k., Yamaguchi
Organizer
56th Autumn meeting of polymer society, 19th september
Place of Presentation
Nagoya, Japan
Year and Date
20070000
Description
「研究成果報告書概要(欧文)」より
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