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Synthesis and properties of self‐healing cross‐linked nonisocyanate polyurethanes from biobased diglycerol bis(cyclic carbonate)
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2020-12-04 , DOI: 10.1002/pen.25594
Ding‐wen Wang 1 , Shuo Chen 1 , Jing‐bo Zhao 1 , Zhi‐yuan Zhang 1 , Jun‐ying Zhang 1
Affiliation  

A simple and green method was established to prepare self‐healing cross‐linked nonisocyanate polyurethanes (SH‐cNIPUs) from biobased diglycerol bis(cyclic carbonate) (DGDC). Two nonisocyanate polyurethane prepolymers with furan terminal groups (tFU‐NIPUs) were synthesized through a ring‐opening reaction of DGDC with furan methylamine and trimethylolpropane tris(poly[propylene glycol], amine terminated) ether, or tris(2‐aminoethyl) amine under mild conditions. The SH‐cNIPUs were prepared via a Diels–Alder reaction between tFU‐NIPUs and a bismaleimide. SH‐cNIPUs were characterized by ATI‐FTIR, 1H NMR, differential scanning calorimetry, polarized optical microscope, and tensile strength after being damaged and healed. SH‐cNIPUs with glass transition temperature from 8 to 49°C, tensile strength up to 21 MPa, and self‐healing efficiency from 67 to 80% were successfully synthesized.

中文翻译:

生物基双甘油双(环状碳酸酯)自修复交联非异氰酸酯聚氨酯的合成及性能

建立了一种简单且绿色的方法,以生物基双甘油双(环状碳酸酯)(DGDC)制备自修复的交联非异氰酸酯聚氨酯(SH-cNIPU)。通过DGDC与呋喃甲胺和三羟甲基丙烷三(聚丙二醇),胺封端的醚或三(2-氨基乙基)胺的开环反应合成了两种具有呋喃端基的非异氰酸酯聚氨酯预聚物(tFU-NIPU)温和的条件。SH-cNIPU是通过tFU-NIPU和双马来酰亚胺之间的Diels-Alder反应制备的。SH-cNIPU的特征是ATI-FTIR,11 H NMR,差示扫描量热法,偏光光学显微镜以及损伤和愈合后的拉伸强度。成功合成了玻璃化转变温度为8至49°C,抗张强度最高为21 MPa,自愈效率为67%至80%的SH-cNIPU。
更新日期:2021-02-08
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