When evaluating bioplastics, you must distinguish between bio-based (originating from renewable resources) and biodegradable/compostable (capable of breaking down). Key specs include tensile strength, thermal stability (melting point), and moisture barrier properties. For instance, PLA (Polylactic Acid) is ideal for rigid packaging but has low heat resistance, whereas PHA (Polyhydroxyalkanoates) offers better marine biodegradability. Ensure the Melt Flow Index (MFI) aligns with your existing injection molding or extrusion machinery to avoid costly equipment retrofitting.