单壁和多壁碳纳米管的水性分散,具有设计的两性聚合物
Vladimir A Sinani1, Muhammed K Gheith, Alexander A Yaroslavov
1Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA.
Journal of the American Chemical Society
|March 10, 2005
概括
研究人员开发了一种新型聚合物,可以有效地在水中分散碳纳米管 (NTs). 这一突破增强了用于先进材料和生物医学应用的NT处理.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 聚合物化学 聚合物化学
背景情况:
- 碳纳米管 (NTs) 具有较差的溶解性,阻碍其净化和应用.
- 大分子具有作为基于NT的复合材料的溶解剂和结构部件的潜力.
研究的目的:
- 为了研究块共聚物作为水性碳纳米管 (NT) 分散的分散剂.
- 为了确定有效的聚合物结构,稳定的NT溶解和加工.
主要方法:
- 测试了各种具有不同侧组功能的区块共聚合物,用于NT分散.
- 使用拉曼光谱,原子力显微镜 (AFM) 和传输电子显微镜 (TEM) 进行表征.
主要成果:
- 聚 ((N-乙基-4-维尼尔皮里迪尼化物-co-N-乙基-4-维尼尔皮里迪尼化物-co-4-维尼尔皮里迪尼) 形成了高度稳定的NT分散.
- 聚合物包裹了NTs,通过疏水吸引和拓匹配创造了1.0-1.5纳米的水友性涂层.
- 阳性表面电荷增强了水友性和与负电荷生物膜的相互作用.
结论:
- 聚合物-NT相互作用相似性是有效的NT溶解的关键.
- 开发的聚合物有助于将NT加工成用于电子和传感的高性能复合材料.
- 带正电荷的NT分散显示出生物医学应用和NT分类的前景.
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