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Development of hybrid polymers based on 3,3,3-trifluoropropyl substituted open cage silsesquioxanes
http://hdl.handle.net/10212/2631
http://hdl.handle.net/10212/2631e0436354-3047-46df-b06c-e553eea1d24c
| 名前 / ファイル | ライセンス | アクション |
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内容の要約 (80.8 KB)
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内容・審査結果の要旨 (147.3 KB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||
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| 公開日 | 2024-08-08 | |||||||||
| タイトル | ||||||||||
| タイトル | Development of hybrid polymers based on 3,3,3-trifluoropropyl substituted open cage silsesquioxanes | |||||||||
| 言語 | en | |||||||||
| その他のタイトル | ||||||||||
| その他のタイトル | 含フッ素置換不完全かご型シルセスキオキサンを基盤としたハイブリッドポリマーの創出 | |||||||||
| 言語 | ja | |||||||||
| 作成者 |
リ, レイナ
× リ, レイナ
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Silsesquioxanes | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Open cage | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Fluorine | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Surface modifiers | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | UV-resistance | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Silsesquioxanes are noteworthy organic inorganic hybrid materials because of the facile synthesis and unique properties. However, the complexity of reaction system remains unsolved, and a well-defined structure is necessary for an understanding of the structure property relationship. Cage-silsesquioxanes (POSSs), typically with a complete cage (denoted as CC-POSSs), possess a nanometric and well-defined structure, comprising an inorganic core and organic substituents on the eight vertices. They exhibit fascinating properties, including good mechanical & thermal stability, and readily processability, and are regarded and used as the element blocks for polymeric materials. However, there are several undesirable problems resulting from their high crystallinity. Open cage silsesquioxanes (IC-POSSs) own seven vertices terminated with organic groups and one opening vertex for further chemical modification. Recent research confinned that IC-POSSs exliibited a comparable thermal stability to CC-POSSs but a lower crystallinity. They are regarded as suitable candidates of building blocks for polymeric materials in place of the roles from CC-POSSs for polymerization. As a noticeable member in the POSS family, fluorinated POSSs, especially fluorinated CC-POSSs are well-kndwn for the low surface free energies and the chemical stability of C-F bonds. They are developed and utilized in versatile applications. On the other hand, fluorinated IC-POSSs, especially hepta(trifluoropropyl)-substituted IC-POSSs (TFP-IC-POSSs), are readily synthesized, and utilized as precursors for fluorinated CC-POSSs. However, except utilization as precursors, the direct uses of fluorinated IC-POSSs as monomers for polymer synthesis is not reported so far. In this thesis, hepta(trifluoropropyl)-substituted IC-POSSs (TFP-IC-POSSs) are selected as starting compounds because of the facile synthesis and short trifluoropropyl substituents with low toxicity. Their opening vertex are modified with different reactivity, correspondingly for feasible polymerization. The TFP-IC-POSSs-based organic inorganic hybrid polymers exhibit optical transparency, good thermal stability, low surface free energies, and impressive UV resistance. | |||||||||
| 言語 | en | |||||||||
| 日付 | ||||||||||
| 日付 | 2021-03-25 | |||||||||
| 日付タイプ | Issued | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||
| 資源タイプ | doctoral thesis | |||||||||
| 学位授与番号 | ||||||||||
| 学位授与番号 | 甲第991号 | |||||||||
| 学位名 | ||||||||||
| 言語 | ja | |||||||||
| 学位名 | 博士（工学） | |||||||||
| 学位授与年月日 | ||||||||||
| 学位授与年月日 | 2021-03-25 | |||||||||
| 学位授与機関 | ||||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||||
| 学位授与機関識別子 | 14303 | |||||||||
| 言語 | ja | |||||||||
| 学位授与機関名 | 京都工芸繊維大学 | |||||||||
