宏观的,整洁的,单壁碳纳米管纤维
Lars M Ericson1, Hua Fan, Haiqing Peng
1Center for Nanoscale Science and Technology, Rice University, Houston, TX 77005, USA.
概括
研究人员通过一种新的溶液线工艺,只使用单壁碳纳米管 (SWNT) 制造了对齐的宏观纤维. 这种方法利用蒸发的硫酸来充电和对齐SWNT,使得生产连续的,整洁的SWNT纤维具有独特的特性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 聚合物科学 聚合物科学
背景情况:
- 单壁碳纳米管 (SWNTs) 具有特殊的机械和电气性能.
- 生产宏观的,对齐的SWNT结构仍然是材料科学中的一个重大挑战.
- 传统方法通常会导致纠的SWNT,限制它们在散装应用中的性能.
研究的目的:
- 开发一种可扩展的方法,仅从SWNTs制造宏观的,对齐的纤维.
- 调查硫酸在SWNTs对齐和处理中的作用.
- 描述产生的SWNT纤维的结构组成和物理特性.
主要方法:
- SWNTs被分散并使用冒烟的硫酸充电.
- 订购的SWNT分散通过溶液旋转进行挤出.
- 连续长度的整洁的SWNT纤维被生产出来.
主要成果:
- 完全由SWNTs组成的精确对齐的宏观纤维被成功制造出来.
- 燃烧的硫酸促进了单个SWNTs的排序到一个对齐的阶段.
- 由此产生的纤维具有独特的结构组成和有前途的物理性能.
结论:
- 使用蒸发硫酸的溶液旋转是一种有效的方法,用于生产对齐的SWNT宏观纤维.
- 制造的SWNT纤维有可能用于需要高性能材料的先进应用.
- 需要对这些新型SWNT纤维的特性和应用进行进一步的研究.
相关概念视频
The Structure of Intermediate Filaments
The intermediate filaments are one of three widely studied cytoskeletal filaments. They are so named as their diameter (10 nm) is in between that of microfilaments (7 nm) and the microtubules (25 nm). These filaments are highly stable and can remain intact when exposed to high salt concentrations and detergents. These filaments are responsible for providing stability and mechanical support to the cells. They also help in cell adhesion and maintaining tissue integrity.
Intermediate filaments...
Intermediate filaments...
Fibrous Proteins
Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...


