3D printing 1 History of engineering & technology 1 Materials science 1 Technology: general issues 1 additive manufacturing (AM) 1 antimicrobial activity 1 barrier properties 1 biocompatible 1 biodegradable 1 biodegradable polymers 1 biomedical 1 biopolymer properties 1 carbon nanoparticles 1 cellulose 1 coextrusion 1 eco-friendly silver nanoparticles 1 electric conductivity 1 electronics 1 fractal analysis 1 fused deposition modeling (FDM) 1 hybrid microgels 1 melt spinning 1 montmorillonite fillers multilayer film 1 nanocomposites 1 nanomaterials 1 nanomedicine 1 oligomeric lactic acid 1 packaging 1 poly (lactic acid) 1