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基于调节粒子相互作用的结构方法制造高度缩和粘性悬浮物的新总体策略

Shunsuke Sakurai^1,2, Fuminori Kamada^3,2, Kazufumi Kobashi^1,2

¹CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.

Journal of the American Chemical Society

|December 23, 2017

概括

研究人员开发了一种使用碳纳米管 (CNT) 制造稳定,高度缩的悬浮液的新方法. 这种技术控制了粒子相互作用,使多功能溶剂使用成为可能,并导致强大的CNT薄膜.

科学领域:

材料科学
体科学
纳米技术

背景情况:

由于复杂的粒子间力量,制造稳定,缩的悬浮是具有挑战性的.
常规方法通常需要特定的溶剂来控制悬浮的特性.
碳纳米管 (CNT) 具有独特的特性,但在缩悬浮中很难稳定.

研究的目的:

为制造高度缩,稳定和粘性塑料悬浮剂制定总体策略.
通过使用碳纳米管聚合物来证明这一策略.
了解粒子微观结构在控制悬浮特性中的作用.

主要方法:

设计粒子表面结构以控制粒子间的吸引力.
使用高度多孔的碳纳米管 (CNT) 聚合物,特别是长单壁碳纳米管 (SWNT).
描述CNT聚合物的微结构和由此产生的悬浮特性 (产量应力,粘度).

主要成果:

使用各种溶剂制造稳定的粘性塑料悬浮剂,不依赖于溶剂的选择.
关键的特点是CNT聚合物的高孔隙性和特定距离,形成了一个精细的CNT捆绑网络.
悬浮物在静止状态下表现出类似固体的行为 (收益应力~100 Pa) 和在应力下表现出类似液体的行为 (粘度~1 Pa·s在1000 s−1).
观察到异常稳定性在静止状态下,在流动状态下,在干燥过程中,使得均的微米厚的SWNT薄膜制造.

结论:

基于颗粒微观结构的稳定,缩,粘性悬浮剂的总体策略已建立.
CNT聚合物的微观结构,特别是孔隙性和间距,对于定制粒子之间的力量至关重要.
这种方法促进了高质量的CNT薄膜的生产,并为悬浮制造提供了一种多功能方法.

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