基于动态二硫化物和四重键的自我愈合的多烯酸盐
Longjin Du1, Yuting Zhong2, Linying Zhao1
1Jiangxi Provincial Engineering Research Center for Waterborne Coatings, Department of Coatings and Polymeric Materials, School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China. liangshen@jxstnu.com.cn.
Soft matter
|April 15, 2024
概括
这项研究介绍了一种新型的自我愈合的多烯酸材料,具有双动态网络,可提高性和机械强度. 这种创新的聚合物表现出极好的破裂延伸和抗拉强度,以及高效的自我修复能力.
科学领域:
- 聚合物科学 聚合物科学
- 材料化学 材料化学
背景情况:
- 开发具有自我修复能力的先进聚合物材料对于延长产品寿命和减少浪费至关重要.
- 现有的自我愈合的聚合物经常面临机械性能和愈合效率之间的权衡.
研究的目的:
- 为了合成一种新型的自我愈合的多烯酸系统.
- 研究双动态网络 (二硫化物键和四重键) 对材料性质的贡献.
- 评估开发的聚合物的机械性能和自我愈合效率.
主要方法:
- 自由基共聚合被用来合成聚烯酸系统.
- 该材料包含具有二硫化键的交联剂和形成四重键的单体.
- 评估了机械性能 (抗拉强度,破裂时的延长) 和自我愈合.
- 差分扫描热度计 (DSC) 和热重度计分析 (TGA) 用于热特征.
主要成果:
- 聚烯酸系统表现出极好的性和自我愈合特性.
- 双动态网络 (化学和物理) 有助于优越的机械性能,在断裂时的延长率高达437%,拉伸强度为5.48MPa.
- 即使在高温 (60°C) 时,也观察到有效的自我愈合.
- 通过DSC和TGA证实了改善的热稳定性和玻璃过渡温度.
结论:
- 通过使用双动态交叉连接策略,成功开发了一种强大的自我愈合的多烯酸材料.
- 双硫化物键和四重键的组合提供了协同效应,增强了机械完整性和自我愈合性能.
- 这项工作扩大了自我修复的烯酸材料的范围,并为耐用,可修复的聚合物应用提供了有前途的途径.
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