Tailoring the crystallization and melting behavior of 3D protein-polymer biocomposite materials: A study of pressure-induced silk fibroin/poly(L-lactic acid) foams

•Pressure-induced 3-D bio-composite foams studied, protein's impact on polymer crystallinity investigated.•Melting/crystallization behavior of silk fibroin/poly(L-lactic acid) under varying pressures revealed.•High isothermal temperature slows diffusion, folding, and crystallization of molecular chain segments.•Study provides deeper understanding of biocomposite crystallization behavior and offers design guidelines.