活体/制御されたフッ素アルコールにおけるグリコリドのアニオンポリメリゼーション:持続可能なバイオプラスチックへ
Pengfei Zhang1, Viko Ladelta1, Nikos Hadjichristidis1
1Polymer Synthesis Laboratory, Chemistry Program, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
Journal of the American Chemical Society
|June 29, 2023
まとめ
この研究では,フッ素アルコールのアニオン環開きによるグリコリド (GL) の生/制御されたポリメリゼーションを導入し,プラスチック汚染の持続可能な代替品として,再利用性が向上した明確に定義されたポリグリコリド (PGA) を生成します.
科学分野:
- ポリマー化学
- 持続可能な材料科学
- 有機合成
背景:
- リングオープニングポリメリゼーション (ROP) は,生物分解性およびリサイクル可能なポリエステルへの経路を提供します.
- ポリマー溶解性が悪いため,グリコリド (GL) の制御されたポリメリゼーションは困難です.
- GLのような持続可能なモノメアは,一酸化炭素/二酸化炭素から得られます.
研究 の 目的:
- 生きている/制御されたアニオン ROP を達成する.
- 従来の溶媒での溶解性の限界を克服するために.
- 持続可能なポリエステル合成とリサイクル方法を開発する.
主な方法:
- 酸アルコール (FAs) でアニオン環開きポリメリゼーション.
- GPCとNMRスペクトロスコーピーを用いてポリグリコリド (PGA) の特徴づけ
- ポリメリゼーションメカニズムの解明のためのNMR定位と計算研究.
- 蒸留と亜高層化によるFAとPGAのリサイクル
主要な成果:
- グリコリドの生きた/制御されたアニオン ROP の最初の報告.
- 分散度 (Đ) <1.15と分子重量最大55.4kgmol−1の明確に定義されたポリグリコリド (PGA) の合成
- PGAベースのマクロ分子合成の実証
- ポリメリゼーションを開始せずにモノマーとチェーン端の両方を活性化するフッ素アルコールの識別.
結論:
- フロロアルコールは,グリコリドの制御されたアニオン ROP を可能にし,以前の制限を克服します.
- 開発された方法は,明確に定義されたポリグリコリドとリサイクル可能な成分を提供します.
- このアプローチは プラスチック汚染に対処するための 持続可能な代替手段です
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