Delamination Suppression in Stretchable Ceramic/Polymer Composites

Stretchable ceramic/polymer composites have attracted considerable attention for wearable electronics and soft devices owing to their combined mechanical flexibility and functional performance. However, the large modulus mismatch between ceramic fillers and elastomeric matrices generates interfacial stress concentration during deformation, resulting in interlayer delamination and mechanical failure. In this study, self-assembled BaTiO₃ (BTO) networks and layer-by-layer structures were employed to investigate deformation-induced failure behavior in stretchable composites. Strain tests revealed that severe deformation caused delamination of ceramic multilayers while the polymer matrix remained intact, indicating that the ceramic/polymer interface is the primary mechanical weak point. To improve interfacial stability, surface-modified ceramics and functional elastomer matrices, including BTO@PDA and PU-PDMS, are being explored to enhance ceramic–polymer adhesion and suppress delamination under strain. This work provides an interfacial engineering strategy for mechanically stable stretchable ceramic/polymer composites.