ポリビニアルキラート炭化水素表面活性剤を用いた超臨界CO2での分散ポリメリゼーションが成功し,RAFTで合成され,アンカリングされた
Hyunsuk Lee1, Elaine Terry, Mengmeng Zong
1School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, United Kingdom.
Journal of the American Chemical Society
|August 22, 2008
まとめ
新しい炭化水素分子は,超臨界の二酸化炭素 (scCO2) で優れた溶解性を示す. この進歩により,scCO2における効率的な分散ポリメリゼーションが可能になり,明確に定義されたポリマー粒子が得られます.
科学分野:
- ポリマー化学のポリマー化学について
- マテリアルサイエンス 材料科学
- グリーン・ケミストリー 緑の化学
背景:
- 超臨界二酸化炭素 (scCO2) は,調節可能な性質を持つ環境に優しい溶媒です.
- CO2フィリックポリマーの開発は,ポリメリゼーションにおけるscCO2アプリケーションの拡大に不可欠です.
- 既存の炭化水素ポリマーは,scCO2における溶解性が限られている.
研究 の 目的:
- 新しいCO2-フィリック炭化水素ポリマーを合成するために.
- これらのポリマーのscCO2における溶解性を調査する.
- scCO2.2内の分散ポリメリゼーションにおけるこれらのポリマーの有用性を実証する.
主な方法:
- リバーシブル・アディション・フラグメンテーション・チェーン・トランスファー (RAFT) ポリメリゼーションが合成に使用されました.
- ポリ (ビニルアルキレート) は,CO2-フィリルであるように設計されました.
- N-ビニルピロリドンの分散ポリメリゼーションは,合成されたポリマーを安定剤として使用してscCO2で実施されました.
主要な成果:
- 合成されたポリ・ビニル・アルキラートは,scCO2で前例のない溶解性を示した.
- チオカルボニルチオ末端群は,有効なアンカリングを容易にした.
- よく定義された球形ポリマー粒子の高収量度は,scCO2.2での分散ポリメリゼーションにより得られた.
結論:
- 特殊なscCO2溶解性を有する新しいCO2フィリックポリマーが成功して合成されました.
- 開発されたポリマーは,scCO2における分散ポリメリゼーションの効果的な安定剤である.
- この研究は,ポリマー合成の反応媒介としてscCO2を使用する可能性を拡大します.
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