Abstract
The grafting of oppositely charged water-soluble monomers onto a polyacrylonitrile (PAN) ultrafiltration (UF) membrane and the consequent stratification processes were investigated by means of attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The grafting of monomers with sulfo-acidic groups was increased when it was conducted on a membrane previously grafted with the presence of oppositely charged amine groups increased the grafting of exposed to buffer solutions having different pH values, their ATR-FTIR spectra revealed that chemical changes had occurred both within the layers and on the surface. The pH-dependent behavior of the bilayered membranes showed that the first-layer grafts had interpenetrated, to a certain extent, into the second layer of the polyelectrolyte and vice versa.
| Original language | English |
|---|---|
| Pages (from-to) | 155-165 |
| Number of pages | 11 |
| Journal | Reactive and Functional Polymers |
| Volume | 54 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 1 Jan 2003 |
Keywords
- ATR-FTIR
- Alternatively charged monomers
- Grafting onto PAN
- Layered membranes
ASJC Scopus subject areas
- General Chemistry
- Environmental Chemistry
- Biochemistry
- General Chemical Engineering
- Polymers and Plastics
- Materials Chemistry