Aimed to investigate the intricate shape memory phenomena and the potential for bidirectional reversibility within polymer matrices. A series of shape memory liquid crystal elastomers (Dp-LCEs) were successfully prepared using azobenzene-4,4'-dicarboxylic acid, polycaprolactone, and six methylene diisocyanate as the main raw material and triethanolamine to form crosslinking points. The structure and thermal properties of these Dp-LCEs were characterized using Fourier-transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. Additionally, the stretchability, photo-thermal responsiveness, and reversible deformation of the Dp-LCEs were analyzed using stretching tests and by exposing them to ultraviolet radiation. The results showed that A-LCEs exhibited unique photo-thermo-synergy response shape memory characteristics and excellent bidirectional reversible shape memory. This study lays a robust theoretical foundation for the tailoring of advanced multifunctional shape memory materials
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Ban et al. (2024) studied this question.
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