Enhancement Mechanism of Shape Memory Performance by Photothermal Effect in Silicon-based Carbon Dots/PVA Composites

Abstract Shape memory materials as a type of intelligent materials that can restore to their initial state under exter nal stimuli have shown great potential in emerging fields such as flexible electronics smart packaging and biomedi cine.However the shape recovery efficiency of traditional polyvinyl alcohol (PVA) materials in water is greatly limit ed.This paper reports a novel photo-responsive shape memory material based on a PVA/carbon dots composite which exhibits superior shape recovery performance in water compared to pure PVA by combining the carbon dots with PVA .movement of molecular chains and achieving rapid shape recovery.Considering that as-prepared composite has the excellent controllable deformation performance and water-responsive characteristics This study provides a new idea for the development of efficient light-thermal-water multi-responsive intelligent materials.Key words shape memory materials Si-doped