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光响应聚合物材料是指能够在光的作用下发生某些化学或物理反应,产生一系列结构和形态变化的功能聚合物材料.在光响应聚合物体系中引入液晶基元通过适度交联可形成光响应交联液晶聚合物,它结合了液晶的各向异性以及聚合物网络的橡胶弹性,具有优异的协同作用.且因为光能具有环保性、远程可控性、瞬时性等优异的特性,光响应交联液晶聚合物备受关注.通过合理的设计,光响应交联液晶聚合物可以实现全光驱动的形变,并且可以制成多种柔性智能执行器,在人工肌肉、微型机器人、微泵、传感器等仿生和智能微机械系统领域有着广泛的应用前景.本文综述了光响应交联液晶聚合物近年来的研究进展,包括其二维和三维形变、微观形变引起的表面形貌或其他性质的变化以及基于形变制成的柔性智能执行器,阐述了光响应的机理,并展望了该领域的发展前景.
Photo-responsive polymeric materials refer to functional polymeric materials capable of undergoing certain chemical or physical reactions under the action of light to produce a series of structural and morphological changes.Adding liquid crystal mesogens to light-responsive polymer systems by moderately crosslinking Forming a light-responsive cross-linked liquid crystal polymer that combines the anisotropy of the liquid crystal with the rubber elasticity of the polymer network and has excellent synergistic effects. Because light energy has excellent characteristics such as environmental friendliness, remote controllability, and transientity , The photoresponsive cross-linked liquid crystal polymer attracts much attention.With a reasonable design, light-responsive cross-linked liquid crystal polymer can achieve full light-driven deformation, and can be made into a variety of flexible smart actuators, artificial muscles, micro robots, Micro-pumps, sensors and other biomimetic and intelligent micro-mechanical systems have broad application prospects.In this paper, the research progress of light-induced cross-linked liquid crystal polymers in recent years, including its two-dimensional and three-dimensional deformation, micro-deformation caused by surface morphology or Other properties of the flexible actuator based on deformation made flexible, described the mechanism of light response, and prospects of the field before the development .