Table 1.
NPs physical properties as determined for dispersions aged 180 days. The mean hydrodynamic diameter (Dz), the polydispersity (P) and the zeta-potential (ζ) were obtained by dynamic light scattering (DLS). The mean diameter (D) was obtained for dry dispersions from scanning electron microscopy (SEM) and sizing analysis by the ImageJ software. The Dzminimum was obtained from the effect of [NaCl] on Dz in Figure 2. The NP shell thickness is ∆/2.
| Dispersion | D/nm | Dz/nm | Dzminimum/nm | ∆/2/nm | P | ζ/mV | Solids/mg·mL−1 | Conversion/% |
|---|---|---|---|---|---|---|---|---|
| PMMA/PDDA | 164 ± 32 | 226 ± 3 | 166 ± 2 | 30 | 0.010 ± 0.010 | 51 ± 1 | 6 ± 1 | 11 ± 1 |
| PMMA/PDDA/CTAB | 97 ± 14 | 116 ± 1 | 98 ± 1 | 9 | 0.040 ± 0.010 | 50 ± 2 | 26 ± 1 | 79 ± 1 |
| PMMA/PDDA/DODAB | 183 ± 28 | 226 ± 1 | 194 ± 1 | 16 | 0.030 ± 0.020 | 54 ± 1 | 17 ± 1 | 47 ± 1 |
| PMMA/PDDA/lecithin | 190 ± 25 | 217 ± 2 | 194 ± 1 | 11.5 | 0.040 ± 0.020 | 55 ± 1 | 8 ± 1 | 24 ± 1 |