極性溶剤で超高分子量ポリエチレンに制御されたポリメリゼーション
Philip Kenyon1, Melissa Wörner1, Stefan Mecking1
1Chemical Materials Science, Department of Chemistry , University of Konstanz , Universitätsstrasse 10 , 78457 Konstanz , Germany.
Journal of the American Chemical Society
|May 18, 2018
まとめ
新しいニッケル複合体は,超高分子量ポリエチレン (UHMWPE) の制御された合成を可能にします. これらの触媒は,高温下でも非常に線形なUHMWPEを生成し,生体ポリメリゼーションの特徴を示しています.
科学分野:
- 有機金属化学
- ポリマー科学
- キャタリシス
背景:
- 2,4,8-トライアリルナフチアミンリガンドは,協調化学において極めて重要です.
- ニッケル複合体は,ポリメリゼーション反応の触媒として広く使用されています.
研究 の 目的:
- 新しいニッケル複合体を2,4,8-トリアリルナフチアミンリガンドで合成する.
- これらの複合体のエチレンポリメリゼーションにおける触媒的活性を調べる.
- 制御された特性を持つ超高分子量ポリエチレン (UHMWPE) を生産する.
主な方法:
- 選択的リチウム化,ボリル化,結合による8-アリルナフチアミンの合成.
- 新しいニッケル複合体の単体合成
- 極性有機溶剤で合成されたニッケル複合体を用いてエチレンポリメリゼーション.
主要な成果:
- 新種のニッケル複合物 (4-Pyと5-Py) の合成に成功した.
- 制御された分子量 (M w/M n = 1.2) で生体ポリメリゼーションの特徴を証明した.
- 超高分子量ポリエチレン (UHMWPE) の形成 60 °Cで高線性
結論:
- 新しいニッケル複合体はUHMWPEの生産に有効な触媒です.
- 5-Py複合体はベータ-Hの除去に低い傾向を示し,高線形性を可能にします.
- 制御されたポリメリゼーション条件は,高分子量と線形ポリエチレン構造をもたらす.
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