A Morphological Study of Poly (Vinylidene Fluoride) Pvdf Membranes: In Perspective of Membrane Pervaporation Process

https://doi.org/10.22146/ajche.49707

Adil Hatem Rashid(1*), M. D. Irfan Hatem(2), Muhammad Syarhabil Ahmad(3), Mohd. Hafiz Dzarfan Othman(4)

(1) School of Bioprocess Engineering. Universiti Malaysia Perlis. Malaysia. kompleks pusat pengajian,Jejawi 3, 02600 Arau, Perlis, Malaysia; Faculty of Chemical Engineering. Al-Muthanna University. Alsamawah. Iraq
(2) School of Bioprocess Engineering. Universiti Malaysia Perlis. Malaysia. kompleks pusat pengajian,Jejawi 3, 02600 Arau, Perlis, Malaysia
(3) School of Bioprocess Engineering. Universiti Malaysia Perlis. Malaysia. kompleks pusat pengajian,Jejawi 3, 02600 Arau, Perlis, Malaysia
(4) Advanced Membrane Technology Research Centre (AMTEC), Faculty of Petroleum and Renewable Energy Engineerign. Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Malaysia
(*) Corresponding Author

Abstract


Membrane separation plays an important role in chemical industry (Prabhat et al. 2011). Pervaporation is one of the most promising membrane separation processes which is used in a wide range of applications such as separation of organic mixtures and dehydration of solvents. This study investigated the effect of polymer concentration on the morphology of pervaporation membrane, where polyvinylidene fluoride (PVDF) was chosen as the base polymeric material while phase inversion method was employed as a technique to prepare an asymmetric PVDF membrane. The polymer concentration in dope solution was varied from 16 to 20wt% and the prepared membranes were characterized in terms of its structure, porosity, contact angle, and pore size. Five PVDF membrane samples were prepared (without any post-treatment) with polymer concentration of 16, 17, 18, 19, and 20wt% respectively. Depending on permeating component, two main areas of pervaporation processes can be identified: hydrophobic and hydrophilic and consequently two types of membranes could be observed: hydrophobic and hydrophilic membranes. From the results, it was found that the increase in polymer concentration has produced membranes with low pore size and porosity and as a result, high contact angle (low hydrophilicity).The highest contact angle of 83º was found for membrane with highest polymer concentration of 20wt% with the lowest pore size and porosity of (0.4156µm and 65%) respectively. The lowest contact angle of 76º was found for membrane with the lowest polymer concentration of 16wt% with the highest pore size and porosity (0.8671µm and78%) respectively.

Keywords


Membrane separation, Pervaporation (PV), PVDF membrane, Phase inversion, Polymer Concentration, Membrane morphology.

Full Text:

PDF


References

  1. Agnieszka, K.H.; Ben A.; Wouter S.; and Vankelecoma F.J.(2013). Study of polymer concentration and evaporation time as phase inversion parameters for polysulfone-based SRNF membranes. Journal of Membrane Science,442, 196–205.
  2. Ahmad A.L., and Ramli W.(2013). Hydrophobic PVDF membrane via two-stage soft coagulation bath system for Membrane Gas Absorption of CO2. Separation and Purification Technology, 103, 230-240.
  3. Ahmad A.L., Ideris N., Ooi B, Low S, and Ismail A. (2013). Influence of Polymer Concentration on PVDF Membrane Fabrication for Immunoassay Analysis. Journal of Applied Sciences, ISSN 1812-5654.
  4. Ahmad A.l., Ramli W, Fernando W, and Daud W (2012). Effect of ethanol concentration in water coagulation bath on pore geometry of PVDF membrane for Membrane Gas Absorption application in CO2 removal. Separation and Purification Technology, 88, 11-18.
  5. Andy C., Walter K., Yufeng Z., and Xianshe F. (2013). A study of thermodynamics and kinetics pertinent to formation of PVDF membranes by phase inversion. Desalinatio, 309, 156- 164.
  6. Boor S., Victor K., Raed H., and Nidal H. (2013). A review on membrane fabrication: Structure, properties and performance relationship. Desalination, 326, 77-95.
  7. Enu J., Albert S., and Yong T. (2011). Pervaporation of butanol/water mixtures using siloxane polymer/ceramic composite membranes. Desalination and water treatment, 48, Issue 1-3..
  8. Fu Liu, Awanis H., Yutie L., Moghareh A., and K. Li (2011). Progress in the production and modification of PVDF membranes. Journal of Membrane Science, 375, 1-27.
  9. Iwona S., Mafalda P., and Andrew L. (2011). The effect of membrane formation parameters on performance of polyimide membranes for organic solvent nanofiltration (OSN): Part A. Effect of polymer/solvent/non-solvent system choice. Journal of Membrane Science, 381, 152-162.
  10. Jinhui W., Genghao G., Masakoto K., Tomohisa Y., Kenji Ito, and Toshinori T. (2013). Pervaporation performance and characterization of organosilica membranes with a tuned pore size by solid-phase HCl post-treatment. Journal of Membrane Science, 441, 120-128.
  11. Johanna N., Wojciech K., and Riitta L.K. (2013). Pervaporation performance of composite poly(dimethyl siloxane) membrane for butanol recovery from model solutions. Journal of Membrane Science, 434, 55-64.
  12. Kang G-d., and Cao Y-M (2014). Application and modification of poly(vinylidene fluoride) (PVDF) membranes: A review. Journal of Membrane Science ,463, 145–165.
  13. Masuelli M.A, Grasselli M, Marchese J., and Ochoa N.A (2012). Preparation, structural and functional characterization of modified porous PVDF membranes by ɤ-irradiation. Journal of Membrane Science, 389, 91- 98.
  14. Mônica B.T., Patrícia P., Marcos M., Jocelei D., and Mara Z. (2012). Effect of non-solvents used in the coagulation bath on morphology of PVDF membranes. Material research, 15, 882-890.
  15. Ooi B.S., Yatim N., Ahmad A.L., and Lai S.O.(2012). Preparation of polyvinylidene fluoride membrane via dual coagulation bath system and its wettability study. Journal of Applied Polymer Science, 124, E225-E232.
  16. Prabhat G., Singh R.P., and Veena C. (2011). Pervaporation separation of organic azeotrope using poly(dimethyl siloxane)/clay nanocomposite membranes. Journal of Separation and Purification Technology , 80, 435–444.
  17. Rinku T., Elena G-B, and Hassan A. (2014). Pore structure control of PVDF membranes using a 2-stage coagulation bath phase inversion process for application in membrane distillation (MD). Journal of Membrane Science, 452, 470-480.
  18. Wang D-M.and Lai J-Y (2013). Recent advances in preparation and morphology control of polymeric membranes formed by nonsolvent induced phase separation. Current Opinion in Chemical Engineering, 2, 229-237.
  19. Yee K., Natalia W., and Chung T-S (2011). Pervaporation of semi- crystalline poly(vinylidene fluoride) membrane formation and its prospects for biofuel (ethanol and acetone) separation via pervaporation. Journal of Membrane Science, 378, 149-162.



DOI: https://doi.org/10.22146/ajche.49707

Article Metrics

Abstract views : 2116 | views : 3079

Refbacks

  • There are currently no refbacks.


ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.