2019 Fiscal Year Final Research Report
Organo-modified nanodiamond with excellent heat-resistance - nanodispersion in crystalline transparent polymer -
| Project/Area Number |
17K05986
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Saitama University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | ナノダイヤモンド / 表面修飾 / 非脱着性 / 二座型結合 / 長鎖ホスホン酸 / 高分子系ナノ複合材 / 溶融混練 / 親和性 |
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| Outline of Final Research Achievements |
Well-dispersed polymer/organo‐modified nanodiamond (ND) composites were created using crystalline fluorinated polymers as a matrix. Both fluorocarbon- and hydrocarbon-modified ND formed well-dispersed nanocomposites in polyvinylidene-fluoride-based fluorocopolymers. The former was prepared due to excellent miscibility, and the latter was obtained by the so-called "nucleation effect". Fabricating a nanocomposite by combining hydrocarbon-modified fine particles and a fluorinated polymer is not universally feasible, and this system was unique. Ethylene-tetrafluoroethylene and perfluoroalkoxyalkane polymers showing high-melting points cannot form a nanohybrid with hydrocarbon-modified inorganic nanoparticles. To form a nanocomposite via melt-compounding, the desorption temperature of the modified chain of the outermost surface of the organo-ND had to be increased. Phosphonic acid containing fluorocarbon chain-modified ND had satisfied all these requirements.
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| Free Research Field |
高分子物性
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| Academic Significance and Societal Importance of the Research Achievements |
耐熱性表面修飾ナノダイヤモンド(ND)の開発により，2社との共同研究を推進することができた．1社とは，有機化NDの表面修飾鎖の非脱着性を活用して，力学物性に優れた高分子系ナノ複合材の創出を，高融点性を持つ高分子材料と溶融混練することで進行した．耐熱性・耐候性に優れ，簡便な混練によって調整可能なナノ複合材は，非脱着性有機化NDを活用することで達成できる．また，潤滑剤開発においてもこの技術は徴用され，ナノサイズの無機微粒子が有機鎖で修飾されたことから，潤滑油中で分散能を示し，新規の機能性潤滑油として社会貢献できる可能性が示された．学術的にはこの1年だけでも15報もの論文が国際的学術誌に掲載された．
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