Soluble,polymeric condensate of dibenzo-18-crown-6 and formaldehyde; synthesis,characterization and absorption of anionic copolymers |
| |
| Affiliation: | 1. Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;2. Tissue Engineering Lab, Università Campus Bio-Medico di Roma, 00128 Rome, Italy;3. Warsaw University of Technology, Faculty of Materials Science and Engineering, 02507 Warsaw, Poland;1. Department of Food Science and Home Economics, School of Applied Sciences, College of Engineering, Science and Technology (CEST), Fiji National University-, Fiji;2. Research and Development Division, Aquagri Processing Private Limited, Tamil Nadu, India |
| |
| Abstract: | Dibenzo-18-crown-6 and formaldehyde polycondensate (PDBCO, Mw = 6760, soluble in CHCl3 and in 2-methyl-1-pyrolidone (NMP) was synthesized by condensation in NMP using formic acid as catalyst. Alternatively, a sequence of reaction steps, involving sodium bromide salts, for solubilization (see Scheme 1) was worked up. PDBC as its sodium bromide complex is compatible with polysulfone derivatives. PDBC was found to be active in KSCN transport across a liquid membrane. Membranes cast from PDBC were also compared in adsorption of anionic proteins (PGT) with sulfonated polysulfone (SPS) or aminated polysulfone (APS). The absorption of PGT on PDBC membrane is strongest, but reversible. Thermal decomplexation of the cations neutralizes the cation-charged membrane and causes elution of the anionic PGT polymer. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
