Polymer system | Critical dissolution pH | Critical ionization |
PMAA/PHEA | 4.0 | 1% |
PMAA/PEO | 4.6 | 1% |
PMAA/PAAM | 5.0 | 4% |
PMAA/PVME | 6.0 | 2% |
PMAA/PNIPAAM | 6.2 | 3% |
PMAA/PVPON | 6.4 | ~8 ?10% |
PMAA/PVCL | 6.95 | 30% |