循環性アセタルの可逆不活性化による化学的に再利用可能な熱プラスチック

Brooks A Abel¹, Rachel L Snyder¹, Geoffrey W Coates²

¹Department of Chemistry and Chemical Biology and Joint Center for Energy Storage Research, Baker Laboratory, Cornell University, Ithaca, NY 14853, USA.

Science (New York, N.Y.)

|August 13, 2021

まとめ

持続可能な循環型プラスチック経済を創り出すための新しい方法を開発しましたこのプロセスは,サイクルアセタルから強いポリアセタルを生成し,完全にモノマーに戻すことができます.

科学分野:

ポリマー化学
持続可能な材料科学
化学工学

背景:

循環型プラスチック経済には化学的リサイクル (CRM) が不可欠です
ポリアセタルはCRMにとって有望ですが,現在の方法は低分子量と弱い強度をもたらします.
コントロールされていないカチオン環開きポリメリゼーション (CROP) は,ポリアセタルの使用を制限する.

研究の目的:

高強度ポリアセタルを生産するための制御されたポリメリゼーション方法を開発する.
ポリアセタルの効率的な化学再利用をモノマーに可能にします
プラスチックの廃棄物を利用してこのプロセスの実行可能性を証明する.

主な方法:

循環性アセタルの可逆無効化CROPを使用した.
商業用ハロメチルエーテルイニシアターとインジウム (III) ブロミド触媒を使用した.
合成されたポリ (1,3-ダイオキソラン) (PDXL) で,性能が向上した.

主要な成果:

PDXLの合成は,コモディティのポリオレフィンに匹敵する強度で達成された.
酸触媒によるPDXLからのほぼ定量的なモノマー回復が実証された.
混合プラスチック廃棄物の脱ポリマー化に成功しました

結論:

頑丈で再利用可能なポリアセタルを作るための効率的なポリメリゼーション技術を開発した.
ポリアセタルをモノマーに化学的にリサイクルするための実行可能な経路を確立した.
持続可能な循環型プラスチック経済の発展を進めました

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