蓖麻油
聚氨酯
极限抗拉强度
自愈
可再生能源
聚合物
玻璃化转变
材料科学
机械强度
生物高聚物
复合材料
形状记忆合金
化学
有机化学
工程类
替代医学
病理
电气工程
医学
作者
Chaoqun Zhang,Haiyan Liang,Dunsheng Liang,Zirun Lin,Qian Chen,Pengju Feng,Qingwen Wang
标识
DOI:10.1002/anie.202014299
摘要
Abstract Materials with multifunctionality or multiresponsiveness, especially polymers derived from green, renewable precursors, have recently attracted significant attention resulting from their technological impact. Nowadays, vegetable‐oil‐based waterborne polyurethanes (WPUs) are widely used in various fields, while strategies for simultaneous realization of their self‐healing, reprocessing, shape memory as well as high mechanical properties are still highly anticipated. We report development of a multifunctional castor‐oil‐based waterborne polyurethane with high strength using controlled amounts of dithiodiphenylamine. The polymer networks possessed high tensile strength up to 38 MPa as well as excellent self‐healing efficiency. Moreover, the WPU film exhibited a maximum recovery of 100 % of the original mechanical properties after reprocessing four times. The broad glass‐transition temperature of the samples endowed the films with a versatile shape‐memory effect, including a dual‐to‐quadruple shape‐memory effect.
科研通智能强力驱动
Strongly Powered by AbleSci AI