在可逆交联弹性体中工程疏水性层次性超分子相互作用,以获得卓越的抗水性
Shengnan Zhan1, Houyu Zhang1, Baige Yang1
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
ACS applied materials & interfaces
|March 25, 2025
概括
研究人员使用疏水相互作用开发了具有优越耐水性的先进弹性体. 这些材料在机械上坚固,可治愈和可回收,显示出潜水应用的前景.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 可逆交联弹性体 (RCEs) 由于极性聚合物组,经常与水阻力作斗争.
- 开发强大且耐水性弹性体对于要求高的应用至关重要.
研究的目的:
- 创建机械坚固,可治愈和可回收的弹性体,具有异常的耐水性.
- 调查疏水性层次性超分子相互作用在增强弹性质特性的作用.
主要方法:
- 在聚甲乙烯基醇 (PTMEG) 基聚氨弹性体中纳入疏水性层级的超分子相互作用 (结合和π-π堆叠).
- 使用这些相互作用制造弹性体,以形成相隔的疏水纳米结构.
- 描述耐水性,机械性能和可回收性.
主要成果:
- 弹性体表现出出色的耐水性,在40天后仅吸收1.1%的水.
- 实现了优良的机械性能:拉伸强度为~67.8 MPa,性为~633 MJ m−3,折裂能量为~160 kJ m−2.
- 证明有效的愈合和回收,恢复原始机械性能.
结论:
- 疏水性等级的超分子相互作用显著提高了弹性体的抗水性和机械强度.
- 开发的弹性体为耐用水下应用提供了一个有前途的平台,包括灵活的电色设备.
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