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アゾ製シンメトリックトリチオカルボネートは,前例のないRAFT制御のために
Oleksandr Ivanchenko1, Maksym Odnoroh1, Sonia Mallet-Ladeira2
1Laboratoire des IMRCP, Université Toulouse 3-Paul Sabatier, CNRS UMR 5623, 118 route de Narbonne, 31062 Toulouse, France.
Journal of the American Chemical Society
|December 3, 2021
まとめ
新しいRAFT剤であるBis(2-シアノプロパン-2-イル) トリチオカルボネート (TTC-bCP) は,高モラー質量ポリマーの正確な合成を可能にします. この進歩により,優れた熱安定性を持つ高度な熱可塑性エラストマーが作られます.
科学分野:
- ポリマー化学
- 材料科学
背景:
- リバーシブル・デアクティベーション・ラジカル・ポリメリゼーション (RDRP) は,制御された構造を持つポリマーを合成するために不可欠です.
- 高分子量と低分散性を達成するには,効率的な鎖移転剤の開発が重要です.
研究 の 目的:
- 新しいトリチオカルボネート,Bis(2-シアノプロパン-2-イル) トリチオカルボネート (TTC-bCP) をRAFTポリメリゼーションの優れたエージェントとして導入する.
- TTC-bCPを使用して,よく定義されたトライブロック共ポリマーの合成を実証し,その性質を特徴付ける.
主な方法:
- 2,2'-アゾビス (((2-メチルプロピオニトリル)) (AIBN) からTTC-bCPを合成する.
- メチルメタクリlate-n-ブチルアクリlate-メチルメタクリlate triblockコポリマーをRAFTポリメリゼーションで製造する.
- コポリマーのモール質量,分散度,およびレオロジック性質の特徴.
主要な成果:
- TTC-bCPは効率的に合成され,RAFTポリメリゼーションのための優れた脱出群を特徴づけた.
- 高モラー質量 (Mn ≈ 135 kg mol-1) のトライブロック共ポリマーが例外的な制御で準備された (Đ = 1.04).
- レオロギー分析により,120°Cまでの安定したゴム状の高原を持つ熱可塑性エラストモアの行動が明らかになった.
結論:
- TTC-bCPはRAFTポリマー化剤の重要な進歩を表しています.
- 開発された方法は,望ましい性質を持つ高度なポリマー材料の制御された合成を可能にします.
- 結果として得られるトライブロック共ポリマーは,高性能のエラストマー用途の可能性がある.
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