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Formylated polysulfone membranes for cell immobilization

S. I. VOICU1,* , A. C. NECHIFOR1, B. SERBAN2, G. NECHIFOR1, M. MICULESCU1

Affiliation

  1. University Politehnica from Bucharest, 313 Splaiul Independentei, Bucharest, 060042, Romania
  2. Honeywell Advanced Technology Center, Bucharest, Romania

Abstract

Polysulfone membranes can be obtained in a great variety of morphologies by the classical phase inversion technique. Immersion precipitation is the most widely used phase inversion technique which involves the exchange of the solvent from the polymeric solution with a non-solvent for the polymer, but which is miscible with the solvent. Phase inversion takes place when the concentration of non-solvent in the system polymer/solvent/non-solvent has been increased to such a level that the solution is not thermodynamically stable anymore and demixing will occur. There was developed new phase inversion technique that is based on a chemical reaction which takes place in a specific formylated polysulfone/ solvent/non-solvent - with cell content system and which induces phase separation..

Keywords

Polysulfone Membranes, Phase inversion, Cell Immobilization.

Submitted at: March 23, 2007
Accepted at: Nov. 16, 2007

Citation

S. I. VOICU, A. C. NECHIFOR, B. SERBAN, G. NECHIFOR, M. MICULESCU, Formylated polysulfone membranes for cell immobilization, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 11, pp. 3423-3426 (2007)