In this study, polycaprolactone -PCL- membranes were prepared through immersion precipitation using a mixture of two solvents -tetrahydrofuran -THF- and dimethyl formamide -DMF--, and modified by incorporating extra virgin olive oil -EVO- to improve membrane morphology and make it more suitable for cell attachment and proliferation. Membranes prepared from PCL/THF-DMF solution showed a close-cell structure and the pure water permeability decreased with increasing THF ratio. However, incorporating EVO to the solution, changed the membrane structure from close to open cells, which is proper for cell attachment and proliferation. Nonetheless, no significant change was observed in the pore size of the membranes prepared by incorporating EVO to the PCL/THF-DMF solution. The FTIR analysis of membranes showed that the mixture of THF/DMF as solvent can help EVO to have better solubility in the solution.

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