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Improvement of gas separation properties of polyurethane membrane using plasma grafting

Document Type : Full article

Authors

1 SSchool of Chemical and Petroleum Engineering, Shiraz University, P. O. Box: 71348-51154, Shiraz, Iran

2 School of Chemical and Petroleum Engineering, Shiraz University, P. O. Box: 71348-51154, Shiraz, Iran

Abstract

In recent years, plasma treatments have given good results since they offer high technological efficiency with low waste generation. One of the most important characteristics of plasma methods is their action only on a thin surface layer, whereas the bulk of sample remains unchanged and the modified material keeps its chemical and mechanical properties. In this research, polyurethane membrane surface was modified by low frequency plasma grafting with methacrylic acid and acrylamide monomers to alter solution-diffusion mechanism. We chose different parameters of plasma treatment and studied their effects toward maximum solubility, permeation and selectivity. The grafting on the surfaces was characterized by water contact angle measurement and atomic force microscopy. After confirming a successful grafting, we studied the effect of surface modification on permeation of CH4 and CO2. Significant increase in CO2 permeation and about 32 percent increase in CO2/CH4 selectivity was observed. Better results were obtained for low powers and acrylamide grafted surface.

Keywords

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References
[1]      BP Statistical Review of World Energy, www.bp.com/statisticalreview, (2016).
[2]      Baker, R. W., Membrane technology and applications, 2nd ed., Wiley, New York, (2004).
[3]      Lin, H., Van Wagner, E., Raharjo, R., Freeman, B. D. and Roman, I., “High-performance polymer membranes for natural gas sweetening”, Advanced Materials, 18, 39 (2006).
[4]      Lieberman, M. A., “A mini-course on the principles of plasma discharges”, (2003).
[5]      Baker, R. W., Membrane technology, Wiley Online Library, (2000).
[6]      Baker, R. W., “Future directions of membrane gas separation technology”, Industrial & Engineering Chemistry Research, 41(6), 1393 (2002).
[7]      Baker, R. W. and Lokhandwala, K., “Natural gas processing with membranes: An overview”, Industrial & Engineering Chemistry Research, 47(7), 2109 (2008).
[8]      Bhide, B. and Stern, S., “Membrane processes for the removal of acid gases from natural gas: I. Process configurations and optimization of operating conditions”, Journal of Membrane Science, 81(3), 209 (1993).
[9]      Bhide, B. and Stern, S., “Membrane processes for the removal of acid gases from natural gas: II. Effects of operating conditions, economic parameters, and membrane properties”, Journal of Membrane Science, 81(3), 239 (1993).
[10]  Sridhar, S., Smitha, B. and Aminabhavi, T., “Separation of carbon dioxide from natural gas mixtures through polymeric membranes: A review”, Separation & Purification Reviews, 36(2), 113 (2007).
[11]  Lin, H., Van Wagner, E., Raharjo, R., Freeman, B. D. and Roman, I., “High performance polymer membranes for natural gas sweetening", Advanced Materials, 18, 39 (2006).
[12]  Kapantaidakis, G. C., Kaldis, S. P., Dabou, X. S. and Sakellaropoulos, G.P., “Gas permeation through PSF-PI miscible blend membranes”, Journal of Membrane Science, 110, 239 (1996).
[13]  Hassanajili, Sh., Khademi, M. and Keshavarz, P., “Influence of various types of silica nanoparticles on permeation properties of polyurethane/silica mixed matrix membranes”, Journal of Membrane Science, 453, 369 (2014).
[14]  Zhou, H., Chen, Y., Fan, H., Shi, H., Luo, Z. and Shi, B. “The polyurethane/SiO2 nanohybrid membrane with temperature sensitivity for water vapor permeation”, Journal of Membrane Science, 318, 71 (2008).
[15]  Maeda, Y. and Paul, D. R., “Selective gas transport in miscible PPO-PS blends”, Polymer, 26 (13), 2055 (1985).
[16]  Shicai, W., Mu, Y., Lizhen, L. and Jie, C., “Graft copolymerization of acrylamide onto polypropylene films by plasma technique”, Chinese Journal of polymer science, 6 (2),129 (1988).
[17]  Choi, H. S., Kim,Y. S., Zhang, Y., Tang, Sh., Myung, S. W. and Shin, B. C., “Plasma-induced graft co-polymerization of acrylic acid onto the polyurethane surface”, Surface and Coatings Technology, 182, 55 (2004).
[18]  Sanchis, M. R., Calvo, O., Fenollar, O., Garcia, D. and Balart, R., “Surface modification of a polyurethane film by low pressure glow discharge oxygen plasma treatment”, Journal of Applied Polymer Science, 105, 1077 (2007).
[19]  Qiu, Y. X., Klee, D., Pluster, W., Severich, B. and Hocker, H., “Surface modification of polyurethane by plasma-induced graft polymerization of poly(ethy1ene glycol) methacrylate”, Journal of Applied Polymer Science, 61, 2373 (1996).
[20]  Bhattacharya, A., Rawlins, J. W. and Ray, P., Polymer grafting and crosslinking, John Wiley & Sons, (2009).
[21]  Weibel, D. E., Vilani, C., Habert, A. C. and Achete, C. A., “Surface modification of polyurethane membranes using acrylic acid vapour plasma and its effects on the pervaporation processes”, Journal of Membrane Science, 293, 124 (2007).
[22]  d'Agostino, R., Plasma deposition, treatment and etching of polymers, Academic Press, (1990).
[23]  Suzuki, F., Nakane, K. and Hata, Y., “Grafting of siloxane on poly (styrene-co-maleic acid) and application of this grafting technique to a porous membrane for gas separation”, Journal of Membrane Science, 104, 283 (1995).
[24]  Yang, Y., Li, H., Chen, S., Zhao, Y. and Li, Q., “Preparation  and characterization of a solid amine adsorbent for capturing CO2 by grafting allylamine onto pan fiber”, Langmuir, 26 (13),897 (2010).
[25]  Zhang, Y., Sunarso, J., Liu, Sh. and Wang, R., “Current status and development of membranes for CO2/CH4 separation: A review”, International Journal of Greenhouse Gas Control, 12, 84 (2013).
[26]  Bhattacharyaa, A. and Misra, B. N., “Grafting: A versatile means to modify polymers techniques, factors and applications”, Prog. Polym. Sci., 29, 767 (2004).
Iranian Journal of Chemical Engineering(IJChE)
Volume 14, Issue 3
August 2017
Pages 19-30
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