Deformable BCN/Fe₃O₄/PCL composites through electromagnetic wave remote control

Electromagnetic wave (EMW) induction of shape memory polymer (SMP) composites with multifunctional inorganic fillers is a high efficiency, uniform, and non-contact method. Herein, the shape memory effect of ternary BCN/Fe₃O₄/PCL composites induced by EMWs are explored. The components of Fe₃O₄ and the BCN nanotubes serve as wave-absorbing materials. The electromagnetic properties and EMW absorption performance of BCN/Fe₃O₄/PCL are discussed in detail. The EMWs absorbed by BCN/Fe₃O₄/PCL are dissipated by dielectric loss and magnetic loss. The shape memory mechanism of BCN/Fe₃O₄/PCL is based on the Fe₃O₄ and BCN nanotubes dissipating absorbed EMW energy into heat to boost the temperature of the composites, thereby responding to EMW remote control. This work introduces a new direction for SMPs induced by EMWs as potential candidates in the application of shape recovery in a restricted space.