2021 Fiscal Year Final Research Report
Creation of Functional Polymer Materials by Nano-filler Network Formation Processing
Project/Area Number |
19H02501
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 27010:Transport phenomena and unit operations-related
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Research Institution | Hiroshima University |
Principal Investigator |
Kihara Shin-ichi 広島大学, 先進理工系科学研究科(工), 准教授 (30284524)
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Co-Investigator(Kenkyū-buntansha) |
滝嶌 繁樹 広島大学, 先進理工系科学研究科(工), 教授 (10188120)
宇敷 育男 広島大学, 先進理工系科学研究科(工), 助教 (30734850)
瀧 健太郎 金沢大学, 機械工学系, 教授 (70402964)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | ポリマーナノコンポジット / ナノフィラーネットワーク / 超臨界流体混練 / 泡 / 熱伝導性 |
Outline of Final Research Achievements |
One of the ways to enhance the functionality of polymer materials is to composite with nanofillers. Recently, the use of nanocarbons (NCs) such as carbon nanotubes (CNTs) and graphene has been considered from the viewpoint of high strength, high thermal conductivity, and high electrical conductivity. However, the strong interaction due to their nanoscale origin between NCs, compared with polymers, make difficult to micro-disperse NCs in polymers at high concentrations. In this study, we investigated a nano-dispersion method using a supercritical fluid field in a mild mixing field that includes plasticization and bubble accompaniment. As a result, we found, albeit partially, optimal conditions for CNTs to be resolved, and confirmed the effectiveness of the high pressure fluid mixing method in forming composites with nano-bubble spaces.
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Free Research Field |
高分子レオロジー
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Academic Significance and Societal Importance of the Research Achievements |
ナノカーボンなど強い分子間相互作用のあるナノフィラーをポリマーに高濃度で分散できるプロセッシング開発は、高機能性ポリマー複合材料を開発する基礎技術として関連産業界に極めて有益である。本研究成果は、超臨界流体の特性を活かし、ポリマーの可塑化とナノフィラーへの親和性向上ともに気液界面形成を適切に併用した機械的混練により、表面修飾せずにCNTバンドルを解繊する最適な混練条件を部分的であるが見出すとともに、ナノ空間を有するCNT微分散ネットワーク形成方法を明かにした点で学術的意義がある。
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