聚合物复合材料的层次空间组装方法导致了多功能/碳纳米颗粒
Dan Cheng1, Jun Zhang1, Jianye Fu2
1Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
Science advances
|October 4, 2023
概括
研究人员为聚合物复合材料开发了一种新的层次组装策略. 这种方法可以在没有表面活性剂的情况下制造出独特的二氧化和碳纳米粒子,从而提供精确的结构控制.
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:
- 表面活性剂模板合成对于纳米结构来说很常见.
- 没有表面活性剂的组件的机制和多功能性未得到充分探索.
研究的目的:
- 为聚合物复合材料开发一个层次的空间组装策略.
- 为了生产具有新型结构的二氧化和碳纳米粒子.
- 探索底层的组装机制和结构多功能性.
主要方法:
- 聚合物复合材料的层次空间组合.
- 在更高的长度尺度上使用A-B-A核心外类型组件.
- 通过二氧化/聚合物比率在中间层 (B) 中控制纳米级组装.
主要成果:
- 在和碳纳米粒子中实现了前所未有的结构.
- 证明可控制的架构,使用传统方法是不可能的.
- 建立了/聚合物比率和组装的纳米域结构之间的联系.
结论:
- 层次组装策略使纳米粒子的设计合成成为可能.
- 这种无表面活性剂的方法提供了对纳米粒子架构的精确控制.
- 开辟了创建定制纳米材料的新途径.
相关概念视频
01:18Composite Masonry Walls
Composite masonry walls combine multiple wythes of the same or different masonry materials to create a unified structure. These walls feature wythes that are bonded together either through mortar-filled collar joints, grouted spaces, or more commonly, with rigid metal ties and reinforcements, with the use of masonry header units being rare. Metal ties are preferred because they effectively minimize water penetration, as these walls primarily absorb moisture and then release it into the...
01:29Additives and Fillers in Concrete
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...