相关实验视频
Updated: Jan 25, 2026

07:04
Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
Published on: November 11, 2022
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强大而坚固的水凝通过粗粒度网络具有高离子导电性
Jingxuan Pan1, Zijun Dai1, Shuze Zhu1
1Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310000, China.
Nano letters
|January 23, 2026
概括
这项研究引入了一种使用MXene的新型水凝,以增强机械强度和离子导电性. 这种突破性的材料对先进的可穿戴传感器和灵活的电子设备有很大的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术 纳米技术
背景情况:
- 传统的水凝面临的是机械强度和离子导电性之间的权衡.
- 开发具有同时具有高机械性能和离子传输的软材料仍然是一个挑战.
研究的目的:
- 设计一种能克服机械强度-离子导电性权衡的水凝.
- 探索MXene的使用和水凝结构修改的盐分策略.
主要方法:
- 在聚乙烯醇 (PVA) /烯酸 (ANF) 矩阵中加入微量MXene.
- 使用盐出策略来诱导特定的多孔微观结构.
- 机械性能 (抗拉强度,性,断裂抗) 和离子导电性的表征.
主要成果:
- 与MXene注入的水凝实现了6.08MPa的抗拉强度,9.59MJ/m3的性,以及250%的断裂应变.
- 记录了3.4S/m的高离子导电性.
- 该材料表现出高应变灵敏度 (GF = 3.26) 和在可穿戴传感器的运动监控中有效的应用.
结论:
- 成功开发了一种新的水凝结构,克服了机械-离子导电性权衡.
- 通过盐分将MXene纳入是提高水凝性能的有效策略.
- 开发的水凝显示了可穿戴电子和生物传感应用的巨大潜力.
相关概念视频
Molecular and Ionic Solids
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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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A strong acid is a compound that dissociates completely in an aqueous solution and produces a concentration of hydronium ions equal to the initial concentration of acid. For example, 0.20 M hydrobromic acid will dissociate completely in water and produces 0.20 M of hydronium ions and 0.20 M of bromide ions.
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Calculating pH for Titration Solutions: Strong Acid/Strong Base
A titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH. The pH at different volumes of added base solution can be calculated as follows:
(a) Titrant volume = 0 mL. The solution pH is due to the acid ionization of HCl. Because this is a strong acid, the ionization is complete and the hydronium ion molarity is 0.100 M. The pH of the solution is then:
A titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH. The pH at different volumes of added base solution can be calculated as follows:
(a) Titrant volume = 0 mL. The solution pH is due to the acid ionization of HCl. Because this is a strong acid, the ionization is complete and the hydronium ion molarity is 0.100 M. The pH of the solution is then:
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Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
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Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
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