The Effect of the Additives in the Polymerization Medium on the Gas Permeation Behavior of Polyamide Thin Film Composite Membranes Prepared by Interfacial Polymerization

Document Type : Research Article


1 Department of Polymerization Processes, Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14155-143 Tehran, I.R. IRAN

2 Department of Textile Engineering, Amirkabir University of Technology, P.O. Box 15914 Tehran, I.R. IRAN


In this research, the effects of the presence of additives such as sodium dodecyl sulfate (as a surfactant) and sodium carbonate (as acid acceptor) on the top layer characteristics and gas separation properties of composite membranes, prepared by an interfacial polymerization method, were studied ATR-FTIR and SEM techniques showed the important role of the additives on the structural density and thickness of the top layer. As a result, the top layer of the prepared sample in the presence of both additives was the densest and the thickest while that of the sample prepared in the absence of both additives was the thinnest one. Furthermore, based on the AFM results, the composite membrane prepared in the presence of just sodium carbonate presented the roughest (Rmax = 520 nm) and that prepared in the presence of both additives shows the smoothest (Rmax = 148 nm) surface. Investigation of the gas permeances of membranes shows that the membrane with top layer prepared in the presence of just sodium carbonate has the highest CO2 permeance (25.2 GPU), due to its thin and rough top layer. Moreover, the highest CO2/CH4 selectivity (58) was obtained by the composite membrane prepared in the presence of both additives. On the other hand, the highest CO2/N2 and CO2/O2 selectivities (63 and 54, respectively) were achieved through the utilization of the composite membrane prepared in the presence of just sodium dodecyl sulfate.


Main Subjects

[1] سنایی­پور، حمیدرضا؛ عبادی عموقین، آبتین؛ مقدسی، عبدالرضا؛ کارگری، علی؛ قنبری، داود؛ شیخی مهرآبادی، زهرا؛ قائمی، مجتبی؛ مطالعه خواص جداسازی گاز در غشای آلیاژی پلیمری جدید ABS/PVAc، نشریه شیمی و مهندسی شیمی ایران، (2)30: 43 تا 51 (1390).
[3] Soroush, A., Barzin, J., Barikani, M., Faqthizadeh, M. Interfacially Polymerized Polyamide Thin Film Composite Membranes: Preparation, Characterization and Performance Evaluation, Desalination, 287: 30-316 (2012).
[4] Yave W., Car A., Funari S., Nunes P., Peinemann K., CO2-Philic Polymer Membrane with Extremely High Separation Performance, Macromolecules, 43: 326-339 (2010).
[6] Lee K., Zheng J., Bargeman G., Kemperman A., Benes N., pH Stable Thin Film Composite Polyamine Nanofiltration Membranes by Interfacial Polymerisation, J. Membr. Sci, 478:75-84 (2015).
[8] Lau W.J., Ismail A.F., Misdan N., A Recent Progress in Thin Film Composite Membrane: A Review. Desalination, 287: 190-199 (2012).
[10] Perera D.H.N., Song Q.,  Qiblawey H.,  Sivaniah E.,  Regulating the Aqueous Phase Monomer Balance for Flux Improvement in Polyamide Thin Film Composite Membranes, J. Membr. Sci, 487:74-82 (2015).
[12] Xingwei Yu X., Wang Z., Wei Z., Yuan S., Zhao J., Wang J., Wang S., Novel Tertiary Amino Containing Thin Film Composite Membranes Prepared by Interfacial Polymerization for CO2 Capture, J. Membr. Sci., 362:265-278 (2010).
[13] Yuan F., Wang Z., Li S., Wang J., Wang S., Formation–Structure–Performance Correlation of Thin Film Composite Membranes Prepared by Interfacial Polymerization for Gas Separation, J. Membr. Sci., 421–422:327-341 (2012). 
[14] Li S., Wang Z., Yu X., Wang J., Wang S., High-Performance Membranes with Multi-permselectivity for CO2 Separation, Adv. Mater., 24:3196-3200 (2012).,
[15] Li S., Wang Z., Zhang C., Wang M., Yuan F., Wang J., Wang S., Interfacially Polymerized Thin Film Composite Membranes Containing Ethylene Oxide Groups for CO2 Separation, J. Membr. Sci., 436:121-131 (2013). 
[16] He W., Wang Z., Li W., Li S., Bai Z.,  Wang J., Wang S., Cyclic Tertiary Amino Group Containing Fixed Carrier Membranes for CO2 Separation, J. Membr. Sci., 476:171-181 (2015). 
[17] Klaysom C., Hermans S., Gahlaut A., Craenenbroeck S.,.Vankelecom I., Polyamide/Polyacrylonitrile (PA/PAN) Thin Film Composite Osmosis Membranes: Film Optimization, Characterization and Performance Evaluation, J. Membr. Sci., 445:25-39 (2013). 
[18] Hermans, S. Simplified Synthesis Route for Interfacially Polymerized Polyamide Membranes, J. Membr. Sci. 451: 148-156 (2014).
[19] سمسارزاده، محمد علی؛ وکیلی، اسحاق؛ تهیه و شناسایی غشاهای آمیخت های پلی یورتان - پلی دی متیل سیلوکسان/پلی آمید 12 - قطعه - پلی تتر امتیلن گلیکول برای جداسازی گاز، مجله علوم و تکنولوژی پلیمر، (4)26: 337 تا 348 (1392).
[21] Koolivand H., Sharif A., Razzaghi Kashani M., Karimi M., Koolivand Salooki M., Semsarzadeh M.A., Functionalized graphene oxide/polyimide nanocomposites as Highly CO2-Selective Membranes, J. Polym. Res., 21: 599, 1-12 (2014).