IJSTR

International Journal of Scientific & Technology Research

Home About Us Scope Editorial Board Blog/Latest News Contact Us
0.2
2019CiteScore
 
10th percentile
Powered by  Scopus
Scopus coverage:
Nov 2018 to May 2020

CALL FOR PAPERS
AUTHORS
DOWNLOADS
CONTACT

IJSTR >> Volume 1 - Issue 4, May 2012 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



DRYING INDUCED PHASE SEPARATION IN MULTICOMPONENT POLYMERIC COATINGS SIMULATION STUDY

[Full Text]

 

AUTHOR(S)

Raj Kumar Arya

 

KEYWORDS

Phase Separation, Polymeric Membranes, Asymmetric Membranes, Simulation

 

ABSTRACT

Phase separation simulation study related to cellulose acetate-water-acetone has been done. Results show that porous asymmetric and symmetric membranes can be produced by changing the nonsolvent concentration or by the drying conditions without altering the polymer content using dry-casting process. Dry-casting process is the process in which complete evaporation of solvent and nonsolvent takes place. At low initial nonsolvent concentration phase separation may not take place and dense polymer film may be obtained rather than a porous membrane. At high air velocity the phase separation is completely suppressed and uniformly dense coating devoid of substantial microstructure will result.

 

REFERENCES

[1] Penky, M.R., Zartman, J., Krantz, W.B., Greenberg, A.R. and Todd, P., 2003, “Flow-Visualization during macrovoids pore formation in dry-cast cellulose acetate membranes”, Journal of Membrane Science, 211, 71-90.
[2] Altinkaya, A. S. and Ozbas, B., 2004, “Modeling of asymmetric membrane formation by dry – casting method”, Journal of Membrane Science, 230, 71–89.
[3] Matsuyama, H., Nishiguchi, M. and Kitamura, Y., 2000, “Phase Separation Mechanism during Membrane Formation by Dry-Cast Process”, Journal of Applied Polymer Science, 77, 776-782.
[4] Shojaie, S. S., Krantz, W. B. and Greenberg, A. R., 1994, “Dense polymer film and membrane formation via the dry-cast process Part I. Model development ”, Journal of Membrane Science, 94, 255 – 280.
[5] Shojaie, S. S., Krantz, W. B. and Greenberg, A. R., 1994, “Dense Polymer Film and Membrane Formation via the dry-cast process Part II. Model validation and morphological studies”, Journal of Membrane Science, 94, 281 – 298.
[6] Teramoto, M. , Kitada, S., Ohnishi, N., Matsuyama, H. and Matsumiya, N., 2004, “Separation and concentration of CO2 by capillary-type facilitated transport membrane module with permeation of carrier solution”, Journal of Membrane Science, 234, 1–2, 83-94
[7] Young, T.H., Huang, J.H. and Chuang, W.Y., 2002, “Effect of evaporation temperature on the formation of particulate membranes from crystalline polymers by dry-cast process”, European Polymer Journal, 38, 63-72.
[8] Koenhen, D. M., Mulder, M.H.V. and Smolders, C.A., 1977, “Phase separation Phenomena during the Formation of Asymmetric Membranes”, Journal of Applied Polymer Science, 21, 199-215.
[9] Broens, L., Altena, F.W. Smolders, C.A. and Koenhen, D.M., 1980, “Asymmetric Membrane Structures as a Result of phase separation phenomena”, Desalination, 32, 33 – 45.
[10] Kunst, B. and Sourirajan, S., 1970, “Effect of Casting Conditions on the Performance of Porous Cellulose Acetate Membranes in Reverse Osmosis”, Journal of Applied Polymer Science, 14, 723-733.
[11] Yamamura, M., Nishio, T., Kajiwara, T. and Adachi, K., 2001, “Effect of stepwise change of drying rate on microstructure evolution in polymer films”, Drying Technology, 19, 7, 1397-1410.
[12] Matsuyama, H., Teramoto, M. and Uesaka, T., 1997, “Membrane Formation and Structure Development by dry-cast Process”, Journal of Membrane Science, 135, 271-288.
[13] Sambrailo, D. and Kunst, B., 1987, “Asymmetric Membrane Formation. Is the Evaporation Step Necessary?” Desalination, 64, 321-328.
[14] Dickson, J.M., Lloyd, D.R. and Huang, R.Y.M., 1979, “Ionically crosslinked Poly (acrylic acid) Membranes. III. Reverse Osmosis Results for Dry Cast Membranes” Journal of Applied Polymer Science, 24, 1341 – 1351.
[15] Matsuyama, H., Kim, M. and Lloyd, D. R., 2002, “Effect of extraction and drying on the structure of microporous polyethylene membranes prepared via thermally induced phase separation”, Journal of Membrane Science, 2004, 413-419.
[16] Altinkaya, A. S. , Yenal, H. and Ozbas, B., 2005, “Membrane Formation by dry-cast process model validation through morphological studies”, Journal of Membrane Science, 249, 163 – 172.
[17] Alsoy, S. and Duda, J.L., 1999, “Modeling of Multicomponent Drying of Polymer Films”, AICHE Journal, 45, 4, 896-905.
[18] Zielinski, J.M. and Hanley, B., 1999, “Practical Friction-Based Approach to Modeling Multicomponent Diffusion”, AICHE Journal, 45, 1, 1-12.
[19] Price, P.E. and Romdhane, I.H., 2003, “Multicomponent Diffusion Theory and Its Application to Polymer-Solvent Systems”, AICHE Journal, 49, 2, 309-322.