Thermodynamic Modeling of PES/CA Blend Membrane Preparation

H. Abdallah(1*), S. S. Ali(2)

(1) Researcher in Chemical Engineering Department, Engineering Research Division, National Research Center, Cairo, Egypt., Egypt
(2) Researcher in Chemical Engineering Department, Engineering Research Division, National Research Center, Cairo, Egypt., Egypt
(*) Corresponding author


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Abstract


Thermodynamic behavior of quaternary system with one low molecular weight component; N –Methylpyrrolidone (NMP) as a solvent, non-solvent; polyethylene glycol (PEG 400) and two high molecular weight polymers; polyethersulfone (PES) and cellulose acetate (CA) was investigated. An extended modified Flory-Huggins model was used. The predicted results from model of critical temperature for superiority properties of polymer blend solution were in range between UCST 323 K and LCST 350 K. However, the increasing the vaporization time of PES/CA blend membrane to 30 min has increased the heat of vaporization to 133659.6 J/mole which led to increase in cohesive energy density to 1311.82 J/cm3 and gained more solvent evaporation. The diffusion model was studied on the immersion precipitation process which was indicated that solvent and non-solvent volume fractions increased with time in the coagulation bath , while the polymer solution volume fraction decreased due to solvent and non-solvent removal from polymer solution and blend membrane formation. The predicted results from model of heat treatment process on blend membrane were indicated that increasing in membrane thickness and formation of dense layer in blend membrane
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Keywords


Thermodynamic Behavior; Quaternary System; Immersion Precipitation; Heat Treatment

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References


B. H. Chang, Y. Chan Bao, Molecular thermodynamics approach for liquid–liquid equilibria of the symmetric polymer blend systems, Chemical Engineering Science 58 (2003) 2931 – 2936.

X. L. Wang, H. J. Qian, L. J. Chen, Z. Yuan Lu, Z. Sheng Li, Dissipative particle dynamics simulation on the polymer membrane formation by immersion precipitation, Journal of Membrane Science 311 (2008) 251–258.

K. Wa, D. Leea, P. K. Chanb, X. Feng, Morphology development and characterization of the phase-separated structure resulting from the thermal-induced phase separation phenomenon in polymer solutions under a temperature gradient, Chemical Engineering Science 59 (2004) 1491 – 1504.

J. Randon, P.P. Mardilovich, A. N.Govyadinov and R. Paterson. Computer simulation of inorganic membrane morphology. Part 3. Anodic Alumina Films and Membranes, J. Colloid and Interf. Sci., 169 (1995) 335-341.

H. Barani and S. Hajir Bahrami Investigation on Polyacrylonitrile/Cellulose Acetate Blends, Macromolecular Research, Vol. 15, No. 7, pp 605-609 (2007).

A. M. Bazargan, Z. Gholamvand, M. Naghavi, M. R. Shayegh and S. K. Sadrnezhaad, Phase Inversion Preparation and Morphological Study of Polyvinylidene Fluoride Ultrafiltration Membrane modified by Nano-Sized Alumina, Functional Materials Letters Vol. 2, No. 3 (2009) 113–119.

M. H. V. Mulder, Basic principles of Membrane Technology. Kluwer Academic Publishers, Dordrecht,The Netherlands, 2000.

S. A. Altinkaya , B. Ozbas, Modeling of asymmetric membrane formation by dry-casting method, Journal of Membrane Science 230 (2004) 71–89.

P. Menut, C. Pochat-Bohatier, A. Deratani, C. Dupuy, S. Guilbert, Structure formation of poly (ether-imide) films using non-solvent vapor induced phase separation: relationship between mass transfer and relative humidity, Desalination 145 (2002) 11–16

S.S. Ali, H. Abdallah, Development of PES/CA Blend RO Membrane for Water Desalination, International Review of Chemical Engineering (IRECHE), Vol. 4, N. 3, ISSN 2035-1755, May 2012.

B.A. Miller-Chou, J.L. Koenig, A review of polymer dissolution, Prog. Polym. Sci. 28 (2003) 1223–1270.

C. M Hansen, Hanson solubility parameters: a user’s handbook. Boca Raton, FL: CRC Press; 2000.

Y. Yip, A. J. McHugh, Modeling and simulation of nonsolvent vapor-induced phase separation, Journal of Membrane Science 271 (2006) 163–176.

H. Leea, W. B. Krantzb, S. Tak Hwang, A model for wet-casting polymeric membranes incorporating nonequilibrium interfacial dynamics, vitrification and convection, Journal of Membrane Science 354 (2010) 74–85.

W. B. Krantza, A. R. Greenbergb, D. J. Hellman, Dry-casting: Computer simulation, sensitivity analysis, experimental and phenomenological model studies, Journal of Membrane Science 354 (2010) 178–188.

D. Bouyera,W. Werapuna, C. Pochat-Bohatiera, A. Deratani, Morphological properties of membranes fabricated by VIPS process using PEI/NMP/water system: SEM analysis and mass transfer modeling, Journal of Membrane Science 349 (2010) 97–112.

V.P. Khare , A.R. Greenberg , W.B. Krantz, Vapor-induced phase separation—effect of the humid air exposure step on membrane morphology Part I. Insights from mathematical modeling, Journal of Membrane Science 258 (2005) 140–156

X. Hea, C. Chenb, Z. Jiangc, Y. Su, Computer simulation of formation of polymeric ultrafiltration membrane via immersion precipitation, Journal of Membrane Science 371 (2011) 108–116.

X. L. Wang, H. J. Qian, L.J. Chen, Z.Yuan Lu, Z. Sheng Li, Dissipative particle dynamics simulation on the polymer membrane formation by immersion precipitation, Journal of Membrane Science 311 (2008) 251–258.

J. Min, M. Su, Performance analysis of a membrane-based energy recovery ventilator: Effects of membrane spacing and thickness on the ventilator performance, Applied Thermal Engineering 30 (2010) 991–997

S. Velu, L. Muruganandam, Effect of phase inversion and rheological factor on formation of asymmetric polyethersulpone ultrafilteration membranes for separation of metal ions, J. Chem. Bio. Phy. Sci. Sec. B, Nov. 2011- Jan. 2012, Vol.2, No.1, 163-171.

N. Ghaemi, S.S. Madaeni, A. Alizadeh, P. Daraei ,V.Vatanpour , M. Falsafi, Fabrication of cellulose acetate/sodium dodecyl sulfate nanofiltration membrane: Characterization and performance in rejection of pesticides, Desalination, 290 (2012) 99–106.

C. Hegde, A. M Isloor, M. Padaki, A. F. Ismail and L. W.J, New CPS-PPEES blend membranes for CaCl2 and NaCl rejection, Membrane Water Treatment, Vol. 3, No. 1 (2012) 25-34.

B.M. Ganesh, A. M. Isloor, M. Padaki, Preparation and characterization of polysulfone and modified poly isobutylene-alt-maleic anhydride blend NF membrane, Desalination, 287 (2012) 103–108.


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