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Mechanically robust and moisture sensitive eutectic elastomers

delete2025-01-01
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PRE
AI
R
Ruixin Zhu
D
Daikun Jia
D
Dandan Zhu
X
Xinling Wang *
DOI:10.1016/j.cej.2025.160241delete
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摘要

摘要

En 中文
聚丙烯酸-氯化胆碱(PAA-ChCl)共晶弹性体具有优异的离子电导率、湿度敏感性、弹性、自粘性、抗冻性、非挥发性、无离子泄漏以及成本效益,使其成为替代水凝胶或离子凝胶以实现更广泛应用的有前景的选择。然而,氯化胆碱破坏了分子间氢键,导致氢键微区消失,进而使PAA-ChCl弹性体强度较差,限制了其应用可靠性。本研究报道了采用高度缠结双网络策略,在不牺牲弹性的前提下,将PAA-ChCl弹性体的拉伸强度和断裂能提高了约一个数量级,其名义应力、断裂能和可恢复性分别为2.2 MPa、11.5 kJ m⁻²和88%。缠结微区在拉伸过程中保持各向同性,表明分子间相互作用(氢键)消失,赋予弹性体良好的弹性;同时,低序结构聚合物链的显著取向导致拉伸强度增加。此外,基于PAA-ChCl弹性体的湿度敏感性,已开发出与水分管理相关的多功能应用,包括防雾、湿度调节和水蒸气透过。本研究提高了PAA-ChCl弹性体的实际应用可靠性,并扩展了其在水分管理领域的应用。
Keyword:
Eutectic elastomers
High toughness
Low hysteresis
Entangled microdomains
Antifogging

期刊

Chemical Engineering Journal 封面图
Chemical Engineering Journal
IF:
13.2
论文数:
7.4W
被引数:
48.5W

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