OICC Press International Journal of Industrial Chemistry 2228-5547 14 2 2023 10 15 New (polydimethylsiloxane/graphene oxide)/poly valerolactone pervaporation composite membrane: preparation, characterization and ethylene dichloride/water separation evaluation 10.57647/j.ijic.2023.1402.06 EN Samira Safaei Nasab Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran Ali Arasteh nodeh Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran Susan Khosroyar Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran 0000-0003-2481-372X Mahmod Reza Khadangi Mahrod Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran Vahid Hakimzadeh Department of Food Science and technology, Quchan Branch, Islamic Azad University, Quchan, Iran Journal Article 2023 10 15 In this research, a novel type of pervaporation membrane was developed by (polydimethylsiloxane( PDMS)/graphene oxide(GO))/poly valerolactone (PVL) composite membrane. This prepared membrane was used to separate ethylene dichloride from water. The electrospinning method was used to nanofiber PVL preparation as a support layer for the composite membrane. To increase the selectivity of the optimized PVL nanofiber membrane and increase the affinity with ethylene dichloride; the membrane was coated with a dense PDMS/GO layer. The membranes were characterized by SEM, FTIR, contact angle and swelling measurements. Also the membrane performance in ethylene dichloride separation and its separation factors versus temperature (30−70° C) was evaluated. Results show that with increasing temperature up to 70° C, the total flux and the separation factor of (PDMS/GO)/PVL simultaneously increase from about 113 to 191 g/(m2h) and from 3.4 to 11.65, respectively.