Bio-based self-healing polymers exhibiting recovery of high mechanical strength by mild heating are developed. A series of bio-based network polymers was prepared from furan copolymers, poly(2,5-furandimethylene succinate-co-propylene succinate)s, through the reversible Diels-Alder reaction with bismaleimide. By changing the comonomer composition of the copolymer and the amount of bismaleimide added to the copolymer, the network polymers with various glass transition temperature, T_g, covering from −19 to 37 °C were obtained. Healing test of these network polymers at r.t. and 50 °C revealed a clear relationship between healing ability and T_g: healing required a healing temperature T_h > T_g+15 °C. Furthermore, the network polymers with r.t < T_g < 50 °C expressed recovery of quite high tensile strength of 11–18 MPa at 50 °C. This result indicates that setting T_g slightly above r.t. and T_h above T_g+15 °C shoud be a good strategy to obtain a good balance between mild healing conditions and recovery of high mechanical strength.

已开发出通过温和加热恢复高机械强度的生物基自修复聚合物。通过与双马来酰亚胺的可逆Diels-Alder反应，由呋喃共聚物，聚（2,5-呋喃二甲基琥珀酸酯-共-丙烯琥珀酸酯）制备了一系列生物基网络聚合物。通过改变共聚物的共聚单体组成和添加到共聚物中的双马来酰亚胺的量，获得具有从-19到37℃的各种玻璃化转变温度T _g的网络聚合物。这些网络聚合物在室温和50°C下的愈合测试表明，愈合能力与T _g之间存在明显的关系：愈合需要愈合温度T _h  > Ť_克15℃。此外，rt < T _g  <50°C的网络聚合物 表现出在50°C时具有11–18 MPa的相当高的拉伸强度。该结果表明，将T _g设置为略高于rt并将T _h设置为高于T _g +15°C应该是在温和的康复条件和恢复高机械强度之间取得良好平衡的良好策略。