Effect of Polyphenylsulfone and Polysulfone Incompatibility on the Structure and Performance of Blend Membranes for Ultrafiltration
- National Academy of Sciences of Belarus, Minsk (Belarus); Petersburg State University, St. Petersburg (Russia)
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- National Academy of Sciences of Belarus, Minsk (Belarus)
This study deals with the modification of polyphenylsulfone ultrafiltration membranes by introduction of an incompatible polymer polysulfone to the polyphenylsulfone casting solution to improve the permeability. The correlation between properties of the blend polyphenylsulfone/polysulfone solutions and porous anisotropic membranes for ultrafiltration prepared from these solutions was revealed. The blend polyphenylsulfone/polysulfone solutions were investigated using a turbidity spectrum method, optical microscopy and measurements of dynamic viscosity and turbidity. The structure of the prepared blend flat sheet membranes was studied using scanning electron microscopy. Membrane separation performance was investigated in the process of ultrafiltration of human serum albumin buffered solutions. It was found that with the introduction of polysulfone to the polyphenylsulfone casting solution in N-methyl-2-pyrrolidone the size of supramolecular particles significantly increases with the maximum at (40–60):(60:40) polyphenylsulfone:polysulfone blend ratio from 76 nm to 196–354 nm. It was shown that polyphenylsulfone/polysulfone blend solutions, unlike the solutions of pristine polymers, are two-phase systems (emulsions) with the maximum droplet size and highest degree of polydispersity at polyphenylsulfone/polysulfone blend ratios (30–60):(70–40). Pure water flux of the blend membranes passes through a maximum in the region of the most heterogeneous structure of the casting solution, which is associated with the imposition of a polymer-polymer phase separation on the non-solvent induced phase separation upon membrane preparation. The application of polyphenylsulfone/polysulfone blends as membrane-forming polymers and polyethylene glycol (Mn = 400 g·mol-1) as a pore-forming agent to the casting solutions yields the formation of ultrafiltration membranes with high membrane pure water flux (270 L·m-2·h-1 at 0.1MPa) and human serum albumin rejection of 85%.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 2469939
- Journal Information:
- Materials, Journal Name: Materials Journal Issue: 19 Vol. 14; ISSN 1996-1944
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Solution-spun hollow fiber polysulfone and polyethersulfone ultrafiltration membranes
Properties of blends of polyphenylsulfone and acetylene terminated reactive plasticizer. Final report Oct 79-Jun 80
PVDF/PAN Blend Membrane: Preparation, Characterization and Fouling Analysis
Journal Article
·
Fri Jan 31 23:00:00 EST 1992
· Separation Science and Technology; (United States)
·
OSTI ID:5189311
Properties of blends of polyphenylsulfone and acetylene terminated reactive plasticizer. Final report Oct 79-Jun 80
Technical Report
·
Sat Oct 31 23:00:00 EST 1981
·
OSTI ID:5044705
PVDF/PAN Blend Membrane: Preparation, Characterization and Fouling Analysis
Journal Article
·
Thu Dec 14 23:00:00 EST 2017
· Journal of Polymers and the Environment
·
OSTI ID:22788369