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相关概念视频

Ion Exchange01:17

Ion Exchange

592
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
592
Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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相关实验视频

Updated: Jul 6, 2025

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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对于电离子软执行器的功能对抗性聚电解质.

Van Hiep Nguyen1, Saewoong Oh1, Manmatha Mahato1

  • 1National Creative Research Initiative for Functionally Antagonistic Nano-Engineering, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.

Nature communications
|January 10, 2024
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新方法,在多电解质膜中创建连续的离子导电网络,用于电活性离子软执行器. 这大大提高了软机器人人工肌肉的响应时间和曲位移.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 机器人技术 机器人技术 机器人技术
  • 聚合物化学 聚合物化学

背景情况:

  • 电活性离子软执行器是软机器人的有希望的人工肌肉.
  • 目前的局限性包括响应缓慢,耐用性差,以及由于聚电解质膜中的离子传输问题导致的低带宽.

研究的目的:

  • 开发具有连续离子导电网络的高效多电解质膜.
  • 为了提高电离子软执行器的性能,用于实际应用.

主要方法:

  • 一种功能对抗性溶剂程序被用来合成两性Nafion分子.
  • 这些分子自组装成具有离子表面的微粒,在造时形成连续导电相.

主要成果:

  • 合成的膜具有高离子导电性,提高了执行器的性能.
  • 实现了10倍更快的响应和36倍更高的曲位移.
  • 证明了特殊的耐用性 (>40天) 和宽带宽 (<10Hz).

结论:

  • 开发的多电解质膜使高性能电离子软执行器成为可能.
  • 在一个英寸模仿软机器人和一个动力张密度系统中成功展示了应用.