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自愈热聚氨是由α-环极和聚乙烯甘之间的宿主-客人相互作用所驱动的) 单甲基以太或多德醇组合物

Riku Miyagawa¹, Mitsuhiro Shibata¹

¹Department of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino 275-0016, Chiba, Japan.

Molecules (Basel, Switzerland)

|May 14, 2025

概括

新的自我修复热聚合物延长了使用寿命,节省了资源. 这些聚氨网络是使用甘乙氧酸盐 (GCE) 和环氧 (CD) 合成的,在更高的温度下显示出更好的愈合效率.

科学领域:

聚合物科学与工程聚合物科学与工程
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:

自愈聚合物通过延长材料寿命,减少浪费和节约能源来提供可持续的解决方案.
耐热聚合物虽然耐用,但往往缺乏固有的修复能力,限制了它们的长期适用性.
结合超分子相互作用,如宿主-客人化学,为热聚合物实现自我愈合特性提供了一条途径.

研究的目的:

综合和描述新型的自我修复聚氨网络,其中包括宿主-客群.
调查不同的甘乙酸盐 (GCE) 含量和客分子类型对网络属性和自我愈合性能的影响.
为了评估在不同的温度条件下和跨多个愈合周期的愈合效率.

主要方法:

聚氨网 (GCM-abc和GCD-411) 通过糖醇乙氧酸盐 (GCE),α-环氧化 (α-CD),聚乙烯糖醇 (MPEG) 或1-多德醇 (DN) 和六甲二酸盐 (HDI) 的反应合成.
动态机械分析 (DMA) 用于确定网络特征,例如损失触点峰值温度 (Tα) 和交联密度 (νe).
拉力测试用于评估机械强度和量化在室温和高温 (80°C) 治愈后的愈合效率 (ησ).

主要成果:

DMA证实了聚合物网络的形成,随着GCM聚合物中GCE分数的增加,Tα和nE都在减少.
GCM聚合物的抗拉强度随着GCE含量增加而下降,而GCD-411的抗拉强度和Tα/νe比GCM-411略高.
愈合效率 (ησ) 随着GCE含量 (GCM-311 < GCM-411 < GCM-511 < GCD-411) 的增加,并且从室温的24-38%显著改善到80°C的45-62%.
在80°C的多个愈合周期中,GCM-411和GCD-411的ησ逐渐下降.

结论:

合成的聚氨网络显示出有效的自我愈合能力,通过高温和特定的分子设计 (例如,使用1-多德卡作为客人) 来增强.
该研究强调了聚氨网络中宿主-客人相互作用的潜力,用于开发先进的自我愈合材料.
这些发现有助于通过内在修复机制开发更耐用和可持续的聚合物材料.

关键词:

一-多德卡诺尔 (一-多德卡诺尔)治疗性质治疗性质主机与客人的互动.聚乙烯糖醇) 单甲基乙烯自愈的热固体聚氨.它的热和机械性能.α-循环环氧化物.

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