| 基于邻苯二酚氢键作用的自修复弹性体的合成与表征 |
| Synthesis and Characterization of Self-healing Elastomers Based on Hydrogen Bonding of Catechol |
| 投稿时间：2019-04-03 修订日期：2019-04-03 |
| DOI：10.12136/j.issn.1000-890X.2019.08.563 |
| 中文关键词: 自修复 弹性体 邻苯二酚 丙烯酸丁酯 氢键 相分离 交联 合成 结构表征 |
| 英文关键词: self-healing elastomer catechol butyl acrylate hydrogen bond phase separation cross-linking synthesis structure characterization |
| 基金项目:国家自然科学基金资助项目（51873110） |
|
| 摘要点击次数: 734 |
| 全文下载次数: 389 |
| 中文摘要: |
| 将邻苯二酚乙烯基单体（DMA）与丙烯酸丁酯（BA）通过自由基共聚得到无规聚合物BA-Co-DMA，并对其进行结构表征和性能测试。结果表明：邻苯二酚引入丙烯酸酯聚合物中，得到力学性能和自修复性能优异的热塑性弹性体；傅立叶变换红外光谱表明，BA-Co-DMA的邻苯二酚之间形成氢键，赋予其良好的自修复性能；原子力显微镜观察到的相分离表明，邻苯二酚基团之间的相互作用产生聚集体，在BA-Co-DMA中形成物理交联网络；高温促进了分子运动加剧，BA-Co-DMA断裂试样在60 ℃下修复12 h的自修复效果良好。 |
| 英文摘要: |
| By copolymerization of catechol vinyl monomer（DMA） and butyl acrylate（BA），a random polymer BA-co-DMA was synthesized，and its structure and properties were characterized.The result showed that，catechol was introduced into acrylate polymer to obtain thermoplastic elastomer with excellent mechanical properties and self-healing properties.FTIR measurement demonstrated that BA-co-DMA formed hydrogen bonds between catechol groups，which endowed the material with high self-healing properties.The phase separation observed by AFM revealed that the interaction between catechol groups leaded to the formation of aggregates，which formed a physical cross-linked network within the polymers.High temperature promoted the molecular mobility，so that BA-co-DMA fractured sample could be repaired for 12 h at 60 ℃ with a high healing efficiency. |
|
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
