Eco-friendly, self-repairing polymer materials based on reversible Diels-Alder chemistry

被引：5
|
作者：
Wang, Bao [1 ]
Li, Zhiying [1 ]
Liu, Fengya [1 ]
Liu, Yudong [1 ]
机构：
[1] Jilin Univ, Minist Educ, Key Lab High Performance Plast, Coll Chem, Changchun, Peoples R China
来源：
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY | 2020年 / 57卷 / 12期
基金：
中国国家自然科学基金;
关键词：
DA reaction; reaction kinetics; high conversion rate; self-repairing; reusability; COATINGS;
D O I：
10.1080/10601325.2020.1807365
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The recyclability and reuse of materials are essential for satisfying the current demand for polymers while alleviating the impact on the environment. Herein, a series of self-repairing polymeric materials were synthesized by exploiting the reversibility of the Diels-Alder (DA) reaction. The main polymer chains were composed of polyethylene glycol diglycidyl ether (PEGDGE) and polypropylene glycol diglycidyl ether (PPGDGE). The DA reaction kinetics and the mechanism of retro-Diels-Alder (rDA) reaction were studied with Fourier transform infrared (FTIR) spectroscopy. The cross-linking conversion rate exceeded 80% after 100 min and reached 99% after 50 h at 65 degrees C, which is remarkably higher and faster than previous studies. The polymeric material was shown to have excellent reusability and high-temperature self-repairing properties. In addition, the polymer was also capable of performing high-temperature shaping and solvent recovery shaping.
引用
收藏
页码：888 / 895
页数：8
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