2006 Fiscal Year Final Research Report Summary
Development of Novel "Nonamphiphilic" Polymeric Micelles
| Project/Area Number |
16510086
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
YOSHIDA Eri Toyohashi University of Technology, Department of Materials Science, Associate Professor, 工学部, 准教授 (60263175)
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| Co-Investigator(Kenkyū-buntansha) |
TAKATA Tosikazu Tokyo Institute of Technology, Department of Organic and Polymeric Materials, Professor, 大学院・理工学研究科, 教授 (40179445)
ITSUNO Shinichi Toyohashi University of Technology, Department of Materials Science, Professor, 工学部, 教授 (50158755)
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| Project Period (FY) |
2004 – 2006
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| Keywords | "Nonamphiphilic" polymers / Polymeric micelles / Spherical nanoparticles / Noncovalent bond cross-linking / Block copolymers / Random copolymers / Critical micelle concentration / Functional nanoparticles |
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| Research Abstract |
We found novel micelle formation of "nonamphiphilic" polymers consisting entirely of solvophilic segments and developed new polymeric materials using the micelle formation. We prepared nonamphiphilic block copolymers and random copolymers having electron-donating groups at the side chains. The copolymers showed no self-assembly by themselves. The light scattering studies demonstrated that the copolymers formed spherical micelles with a nanoscale in the presence of additives which have an interaction or promote salt formation with the side groups of the copolymers. The size and aggregation numbers of the micelles were dependent on the molecular weight of the polymers, the functionality and structure of the additives, indicating that the size and aggregation numbers of the micelles could be controlled by these factors. We also explored the thermodynamics and kinetics of the micellization and determined the enthalpy and entropy of the micelle formation. Furthermore, we succeeded in preparing functional nanoparticles through the micelle formation of block copolymers with functional groups. The micellization of block copolymers with dye molecules and UV absorbents produced highly light-stable nanodyes.
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