PLP-MALDI-ToF-MSによって得られたメチルメタクリlate-styreneのコポリメリゼーション動態
Robin X E Willemse1, Alex M van Herk
1Laboratory of Polymer Chemistry, Department of Chemical Engineering, Eindhoven University of Technology, The Netherlands. tokunaga@cat,hokudai.ac.jp
Journal of the American Chemical Society
|March 30, 2006
まとめ
この研究では,パルスレーザーポリメリゼーションとMALDI-ToF-MSを組み合わせて,スタイレン-メチルメタクリlateコポリマーを分析しています. それは,分子量,組成,および速度を詳細に記述し,これまでで最も正確な共ポリメリゼーションパラメータを提供します.
科学分野:
- ポリマー化学のポリマー化学について
- 材料科学 材料科学とは
- スペクトル顕微鏡検査です.
背景:
- コポリメリゼーション運動は,ポリマーの性質を制御するために不可欠です.
- 反応率と終了モードの正確な決定は不可欠です.
- 既存の方法では,共ポリマー組成と分子量分布に関する包括的なデータが欠けていることが多い.
研究 の 目的:
- スタイレンとメチルメタクリlateのコポリメリゼーションを調査するために.
- 終結,急性反応性,分子量,組成,および速度に関する相互に関連したデータを取得します.
- このシステムの新しい,正確なコポリメリゼーションパラメータを確立するために.
主な方法:
- エクシマーレーザーによるパルスレーザーポリメリゼーションを用いた.
- 分析のため,マトリックスアシストレーザー脱吸収/イオン化飛行時間質量スペクトロメトリー (MALDI-ToF-MS) を採用した.
- 15.2°Cで,異なるスタイレン濃度とレーザー周波数で大量ポリメリゼーションを行った.
主要な成果:
- 終結,急性反応性,分子量,および組成に関する完全な相互関連データを取得しました.
- MALDI-ToF-MS.を用いて化学組成と分子量分布を決定した.
- 新しく得られた反応性比は,r(St) =0.517,r(MMA) =0.420,s(St) =0.296,s(MMA) =0.262. である.
結論:
- パルスレーザー共ポリメリゼーションとMALDI-ToF-MSの組み合わせは,非常に効果的です.
- この研究は,これまでで最も正確で完全なスタイレンメチルメタクリlateのコポリメリゼーションパラメータのセットを提供します.
- モンテカルロシミュレーションにより,実験結果が検証されました.
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