Qu Weicheng, Bi Zhengxing, Zou Chen, Chen Changle
Key Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
Adv Sci (Weinh). 2024 Mar;11(11):e2307568. doi: 10.1002/advs.202307568. Epub 2024 Jan 6.
Stimuli-responsive polymers have found applications as shape-memory materials, optical switches, and sensors, but the installation of these responsive properties in non-polar and inert polyolefins is challenging. In this contribution, a series of spiropyran (SP)-based comonomers are synthesized and copolymerized with ethylene or ethylene/cyclic monomers. In addition to great mechanical and surface properties, these functionalized polyolefins responded to light, heat, and force, which induced changes in the polymer structure to transmit color or mechanical signals. These interesting responsive properties are also installed in a series of commercial polyolefin materials through reactive extrusion, making the scalable production of these materials possible.
刺激响应性聚合物已被用作形状记忆材料、光开关和传感器，但在非极性和惰性聚烯烃中引入这些响应特性具有挑战性。在本研究中，合成了一系列基于螺吡喃（SP）的共聚单体，并将其与乙烯或乙烯/环状单体进行共聚。除了具有优异的机械性能和表面性能外，这些功能化聚烯烃还对光、热和力产生响应，这些因素会引起聚合物结构的变化，从而传递颜色或机械信号。通过反应挤出，这些有趣的响应特性也被引入到一系列商业聚烯烃材料中，使得这些材料的规模化生产成为可能。
