PVDF microporous membranes were prepared via thermally induced phase separation (TIPS) method. γ‐Butyrolactone (γ‐BA), Propylene carbonate (PC), Dibutyl phthalate (DBP) and Dibutyl sebacate (KD) were used as diluents, and ethanol as extractant. The melting temperatures and crystallization temperatures of different PVDF/diluent systems were determined using difference scanning calorimeter (DSC). Membrane cross‐section morphologies from different systems were observed using scanning electron microscope (SEM). The effects of diluent, cooling rate, and polymer concentration on the polymer crystallization and membrane cross‐section morphology were investigated in detail.
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Su et al. (2006) studied this question.
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