電気静的電荷を帯びたポリマーのコンタクト脱電.
Siowling Soh1, Sen Wai Kwok, Helena Liu
1Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States.
Journal of the American Chemical Society
|November 17, 2012
まとめ
コンタクト脱電化は,コンタクト時に同じ電荷のポリマーが放電する,新たに発見されたプロセスです. 大気中のガス分子へのこの急速な電荷移転は,接触点での介電分解強度を超えるために起こります.
科学分野:
- マテリアルサイエンス 材料科学
- トライボエレクトリシティ (Triboelectricity) とは,トライボエレクトリシティ (Triboelectricity) とは,トライボエレクトリシティ (Triboelectricity) とは,トライボエレクトリシティ (Triboelectricity) とは
- ポリマー物理学 ポリマー物理学
背景:
- ポリマーのコンタクト電化が完全に理解されていないため,複数の電荷移動メカニズムが潜在的に関与しています.
- この研究では",コンタクト脱電化"と呼ばれる新しい放電メカニズムが調査されています.
研究 の 目的:
- 充電ポリマーにおけるコンタクト脱電メカニズムを記述し,検証する.
- 異なるポリマータイプと大気条件におけるこの放電プロセスの一般性を調査する.
主な方法:
- 実験的にポリマービーズと平板 (ポリアミド6/6,ポリオキシメチレン,ポリテトラフルオロエチレン,ポリアミド-イミド) を類似の極性に充電する.
- 同じような電荷を持つポリマーサンプルとの接触時に放電を観察する.
- ファラデーカップを使用して,イオン化された大気中のガス分子への電荷移転を分析する.
主要な成果:
- 陽と負の電荷を持つポリマー (ナイロン,デルリン,テフロン,トルロン) は,接触時に素早く放電する.
- 接触するポリマーが同じ材料か異なる材料かに関係なく,放電が発生しました.
- 電子化された大気中のガス分子への電荷の移転が検出され,提案されたメカニズムをサポートしました.
結論:
- コンタクト脱電化は,同じ電荷を持つポリマーの一般的なメカニズムで,コンタクト時に電場が増えるために大気中のガスのイオン化を伴う.
- このプロセスは,ポリマーを素早く排出し,ポリマーの種類や大気の組成から独立しているようです.
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