Table 5.
Hydrophobic block | PS | PCL | PLA | PLGA |
---|---|---|---|---|
Noncrystallizable | + | − | + | + |
Tg > Troom | + | − | + | + |
|ΔδPEG| >> 0 | + | + | − | + |
Stable particle | + | − | − | + |
Biodegradable | − | − a | + | + |
US FDA approved for parenteral administration | − | + | + | + |
Biodegradable but in years