ブロックコポリマー表面活性剤における形態学的複雑性の起源について
1Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA.
Science (New York, N.Y.)
|April 19, 2003
まとめ
ポリ ((1,2-ブタジエン-β-エチレン酸化物) ディブロックコポリマーは,水中の複雑な3Dネットワークに自己組み立てます. 断片化により,ユニークな網状粒子が生み出され,水害剤を添加することなく,多用途のアンフィフィリックな行動を示します.
科学分野:
- 柔らかい物質の物理学
- ポリマー科学は,ポリマー科学である.
- 材料化学 材料化学について
背景:
- 脂質や表面活性物質のようなアンフィフィリック化合物は,軟質物質にとって不可欠です.
- ブロックコポリマーは,汎用性の高い合成アンフィフィールです.
研究 の 目的:
- 水中のポリ[1,2-ブタジーン-β-エチレン酸化物] (PB-PEO) ディブロック共ポリマーの自己組み立て行動を調査する.
- その結果生じる複雑な構造とその形成メカニズムを特徴づける.
主な方法:
- 画像撮影のための低温伝送電子顕微鏡 (cryo-TEM).
- PB-PEOの分子量と組成の体系的な変化.
- 自己組み立て形態学の分析.
主要な成果:
- PB-PEOの二重ブロック共ポリマーは,特定のPEO重量分数で水中のY接点と3Dネットワークを形成します.
- ネットワークの断片化は,nonergodic, reticulated粒子を生成する.
- これらの複雑な構造に自己組み立ては,臨界分子の重量を超えて観察されます.
結論:
- PB-PEOディブロックコポリマーは,多用途のアンフィファイルの役割を果たし,複雑なネットワークと粒子を形成します.
- この自己組み立ては,分離した水性物質を必要とせずに,低分子量マイクロエムルションを模倣します.
- この発見は,溶液中のブロックコポリマー自己組み立ての理解を広げています.
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