Harnessing the power of carbon fiber reinforced liquid crystal elastomer composites for high-performance aerospace materials: A comprehensive investigation on reversible transformation and shape memory deformation

Abstract

Liquid Crystal Elastomers (LCEs) showcase transformative features making them suitable for rigorous applications, notably aerospace. However, their standalone mechanical properties often fall short. This study introduces the incorporation of carbon fiber to form a reinforced LCE composite, LCEC, aimed at enhancing mechanical performance while maintaining reversible deformation and shape memory attributes. Molecular-level analysis indicates an upsurge in overall composite performance with improved storage modulus (1.1 GPa at 25 °C), heightened reversible deformation, and better shape memory functionality. Both materials retain transformation properties under gamma-ray irradiation. This investigation into LCE and LCEC performance underscores their potential in demanding environments due to improved mechanical strength, transformability, shape memory performance, and radiation resistance. The research offers insights into micro-level alterations leading to macro-level enhancements in material properties, paving the way for future advancements in fields like robotics and aerospace.