通过选择性烯/基添加反应合成具有醇悬挂组的反应性聚合物
1Department of Chemical Engineering, National Tsing Hua University, No. 101, Sec.2, Kuang-Fu Road, Hsinchu, Taiwan.
Macromolecular rapid communications
|July 7, 2025
概括
研究人员使用Meldrum的酸衍生物合成了一种新型反应性聚与悬挂醇组. 这种新型聚合物作为环氧树脂的有效交联剂,提供适应性网络特性和可回收性.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 反应性聚合物对于合成功能性和交联聚合物至关重要.
- 化合物被广泛用于聚合物应用中的交叉连接剂.
研究的目的:
- 开发一种具有悬挂醇组的新型反应性聚.
- 为了评估这种聚的性能作为环氧树脂的交联剂.
- 为了研究由此产生的交联环氧网络的特性.
主要方法:
- 一种梅尔德鲁姆酸衍生物 (MAHP) 单体的合成.
- 通过基/基添加MAHP的聚合形成聚 (P-MAHP).
- 环氧树脂与P-MAHP和性诺沃拉克 (PN) 的交叉连接进行比较.
- 用DSC和DMA等技术对聚合物和交联树脂进行表征.
主要成果:
- 合成的MAHP基聚 (P-MAHP) 呈现出30°C的玻璃过渡温度 (Tg) 和高达240°C的热稳定性.
- 与PN交联环氧树脂 (ER_PN) 相比,P-MAHP交联环氧树脂 (ER_P-MAHP) 的Tg (102°C) 较低,但存储模量 (2.37 GPa) 较高.
- ER_P-MAHP展示了协作性的共价适应性网络的特征,包括因动态结而导致的应力松和物理可回收性.
结论:
- 建立了一种有效的方法来合成带有悬挂醇组的活性聚合物.
- 这种新型聚作为环氧化合物的可行的交叉连接剂,提供可调节的特性.
- 具有可回收性的适应性网络的开发代表了聚合物化学和材料合成的重大进展.
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