Table 1. Summary of Monomer Conversion, Molecular Weight, and Intensity-Average Particle Diameter Data Obtained Using 1H NMR Spectroscopy, DMF GPC (Refractive Index Detector; Poly(methyl methacrylate) Standards), and Dynamic Light Scattering (DLS), Respectively, for a Series of PGMA39–PIPGMAX (G39-Ix) Diblock Copolymer Nanoparticles Prepared at 20% w/w Solids via RAFT Aqueous Emulsion Polymerization of IPGMA at 70 °C.
| sample no. | target composition | conv (%) | GPC Mn (g mol–1) | Mw/Mn | diameter/nm |
|---|---|---|---|---|---|
| 1 | G39 | 69 | 11100 | 1.13 | N/A |
| 2 | G39-Il00 | 99 | 21500 | 1.24 | 42 |
| 3 | G39-I200 | 99 | 30500 | 1.26 | 66 |
| 4 | G39-I300 | 99 | 42100 | 1.29 | 98 |
| 5 | G39-I400 | 99 | 51800 | 1.23 | 132 |
| 6 | G39-I500 | 99 | 61500 | 1.21 | 163 |
| 7 | G39-I600 | 99 | 71900 | 1.22 | 207 |
| 8 | G39-I700 | 98 | 86400 | 1.28 | 247 |
| 9 | G39-I800 | 97 | 90000 | 1.28 | 297 |
| 10 | G39-I900 | 97 | 99200 | 1.22 | 315 |
| 11 | G39-Il000 | 97 | 125000 | 1.20 | 363 |
| 12a | G39-Il500 | 95 | 159500 | 1.32 | 717 |
| 13 | G39-I2000 | 42 | 96200 | 1.16 | 1172 |
a
Attempts to reproduce this formulation led to significantly lower monomer conversions.