A quadratic relationship fit the best compared to other possible relationships (e.g., linear or power law). Though preliminary, this relationship is instructive as it makes a first attempt at predicting 𝑘 𝑑 for foamed materials. The generalizability of this relationship to foams of other biodegradable polymers and environments remains to be determined. Future research should investigate the relationships between cellular architecture and 𝑘 𝑑 in more detail to rationally design foams for minimal persistence and optimal functionality.