Table 1.
The different groups of nanoparticles (NPs) included in the study. Size groups contain all three polyethylene glycol (PEG)-groups. For molecular weight calculations numbers are given as mean ± standard deviation from n = 2. The particle size is the hydrodynamic diameter (Z-average). The size and zeta potential was measured at pH 7.0.
| Particle | PEG Surfactants | PEG Description | Size Groups | Zeta Potential | Polymer Chain Length (Mn and Monomer Units) |
|---|---|---|---|---|---|
| PBCA (N = 11) | Kolliphor/Brij (N = 4) | Short PEG | 100–133 nm (N = 3) | (-1) – (-7) mV | 50.5 ± 13.2 kD N: 327 ± 86 |
| Jeffamin/Brij (N = 5) | Medium PEG | ||||
| 134–166 nm (N = 8) | |||||
| Pluronic/Kolliphor (N = 2) | Long PEG | ||||
| PEBCA (N = 5) | Kolliphor/Brij (N = 2) | Short PEG | 134–166 nm(N = 4) | (-1) – (-7) mV | 48.0 ± 3.6 kD N: 265 ± 20 |
| Jeffamin/Brij (N = 2) | Medium PEG | ||||
| 167–200 nm (N = 1) | |||||
| Pluronic/Kolliphor (N = 1) | Long PEG | ||||
| POCA (N = 3) | Kolliphor/Brij (N = 1) | Short PEG | 134–166 nm (N = 1) | (-1) – (-7) mV | 53.0 ± 2.3 kD N: 254 ± 11 |
| Jeffamin/Brij (N = 1) | Medium PEG | ||||
| 167–200 nm (N = 2) | |||||
| Pluronic/Kolliphor (N = 1) | Long PEG |