Copyright (c) 2025 Ujwala Guntakanti, Sreekanth Reddy Obireddy, Jithendra Thammineni, Karuna Sree Merugu, Anitha Kowthalam, Madhavi Chintha
This work is licensed under a Creative Commons Attribution 4.0 International License.
Development and Characterization of Silicotungstic Acid-loaded Sodium Polymeric Composite Membranes for Pervaporation Applications
Corresponding Author(s) : Madhavi Chintha
Asian Journal of Chemistry,
Vol. 37 No. 4 (2025): Vol 37 Issue 4, 2025
Abstract
Efforts have been focused on the membrane synthesis, specifically enhancing membrane properties through the incorporation of zeolites into a polymer matrix. This study emphasizes the development of sodium carboxymethyl cellulose (NaCMC)/poly(vinylpyrrolidone-co-vinyl acetate) [P(Vp-co-VAc)] matrix composite membranes via solution casting method, incorporating varying amounts of silicotungstic acid (STA) (5, 10, and 15 wt.%) for the pervaporation dehydration of a water-isopropanol mixture. The developed films were characterized by FTIR, DSC, TGA, XRD and SEM techniques. Among all the STA-loaded membranes, the optimum pervaporation performance was observed in the MSTA15 membrane, which had a flux equal to 0.533 kg/m2 h at 35 ºC and a separation factor of 118.52 for a 40 wt.% water-isopropanol feed composition. The developed membrane exhibits a good hydrophilic nature and a molecular sieve effect. Furthermore, STA-loaded membranes showed the improved pervaporation performance compared to pristine membranes. These results of this study suggested that the STA-loaded composite membranes act as prominent materials for the effective dehydration of isopropanol.
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References
H.L. Fleming and C.S. Slater, Applications and Economics, Membrane Handbook, Springer, pp. 132-159 (1992).
H. Sun, X. Luo, J. Liu, G. Li, Y. Zhang, P. Li and Q.J. Niu, Sep. Purif. Technol., 234, 116027 (2020); https://doi.org/10.1016/j.seppur.2019.116027
M.L. Naik, A.M. Sajjan, A.M.S. Achappa, N.R. Banapurmath, T.M.Y. Khan, N.H. Ayachit and M.A.H. Abdelmohimen, Gels, 8, 401 (2022); https://doi.org/10.3390/gels8070401
F.U. Nigiz and B. Karakoca, Appl. Clay Sci., 231, 106721 (2023); https://doi.org/10.1016/j.clay.2022.106721
Z. Xu, C. Liu, L. Xiao, Q. Meng and G. Zhang, Adv. Membr., 4, 100092 (2024); https://doi.org/10.1016/j.advmem.2024.100092
A. Abdali, S.M. Eskandarabadi, M. Mahmoudian and S. Hakimi kuranabadi, Polymer, 312, 127575 (2024); https://doi.org/10.1016/j.polymer.2024.127575
M.S. Rahman, M.S. Hasan, A.S. Nitai, S. Nam, A.K. Karmakar, M.S. Ahsan, M.J.A. Shiddiky and M.B. Ahmed, Polymers, 13, 1345 (2021); https://doi.org/10.3390/polym13081345
S.R. Obireddy and W.-F. Lai, Int. J. Nanomedicine, 17, 589 (2022); https://doi.org/10.2147/IJN.S338897
R. Saberi Riseh, M. Gholizadeh Vazvani, M. Hassanisaadi and Y.A. Skorik, Polymers, 15, 440 (2023); https://doi.org/10.3390/polym15020440
K. Zhu, Z. Yu, J. Li, B.-S. Chiou, M. Chen, F. Zhong and F. Liu, Food Hydrocoll., 150, 109676 (2024); https://doi.org/10.1016/j.foodhyd.2023.109676
O.S. Reddy, M.C.S. Subha, C. Madhavi, K.C. Rao and B. Mallikarjuna, Indian J. Adv. Chem. Sci., 8, 35 (2020).
T. Jithendra, O.S. Reddy, M.C.S. Subha and K.C. Rao, Int. J. Appl. Pharm., 12, 249 (2020); https://doi.org/10.22159/ijap.2020v12i5.37761
V.T. Magalad, A.R. Supale, S.P. Maradur, G.S. Gokavi and T.M. Aminabhavi, Chem. Eng. J., 159, 75 (2010); https://doi.org/10.1016/j.cej.2010.02.040
K. Nikoofar, Arab. J. Chem., 10, 283 (2017); https://doi.org/10.1016/j.arabjc.2014.07.008
B. Bolto, T. Tran, M. Hoang and Z. Xie, Progr. Polym. Sci., 34, 969 (2009); https://doi.org/10.1016/j.progpolymsci.2009.05.003
D. Unlu, Macromol. Res., 27, 998 (2019); https://doi.org/10.1007/s13233-019-7134-0
F.J. Berry, G.R. Derrick and M. Mortimer, Polyhedron, 68, 17 (2014); https://doi.org/10.1016/j.poly.2013.10.014
G. Venkatesulu, P.K. Babu, Y. Maruthi, U.S.K. Rao, M.C.S. Subha, K.C. Rao, J. Adv. Chem. Sci., 3, 174 (2015).
G. Venkatesulu, P.K. Babu, Y. Maruthi, C. Madhavi, A. Parandhama, M.C.S. Subha and K.C. Rao, Indian J. Adv. Chem. Sci., 4, 496 (2016).
G. Acik, C. Cansoy and M. Kamaci, Colloid Polym. Sci., 297, 77 (2019); https://doi.org/10.1007/s00396-018-4443-3
L.K. Mireles, M.R. Wu, N. Saadeh, L. Yahia and E. Sacher, ACS Omega, 5, 30461 (2020); https://doi.org/10.1021/acsomega.0c04010
M. Dilaver and K. Yurdakoc, Polym. Bull. 73, 2661 (2016); https://doi.org/10.1007/s00289-016-1613-7
S. Chaudhari, Y. Kwon, M. Moon, M. Shon, Y. Park and S. Nam, Vacuum, 147, 115 (2018); https://doi.org/10.1016/j.vacuum.2017.10.024
S. Chaudhari, Y. Kwon, M. Shon, S. Nam and Y. Park, RSC Adv., 9, 5908 (2019); https://doi.org/10.1039/C8RA07136E
