Highly ordered porous PLA films prepared by breath figure method
AbstractHoneycomb-patterned porous biodegradable PLA film can be successfully prepared by the Breath Figure (BF) method, which is a self-assembly template and low-cost process. In this research, the fabrication was designed to create a convenient and simple process aimed at meeting commercial requirements. Production of regularly ordered pattern microporous film is carried out in a closed system with optimum conditions. Thus, important production factors â€”that is, the starting polymer concentration in solution, the type of solvent (which affects the solvent evaporation rate), and the relative humidity of the closed chamber â€”were investigated to identify the optimum conditions. The results showed that highly ordered porous film with smaller average pore size of 23.29Â±4.55 Âµm on strut was generated (19.98Â±2.82 Âµm) when high PLA concentration (10% wt PLA) in dichloromethane with 80-85% RH relative humidity was applied.
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