Table 1. Summary of Conversion and Molecular Weight Data Obtained for PDMAC Macro-CTAs Prepared via RAFT Solution Polymerization of DMAC at 30% w/w in Dioxane at 70 °C.
| entry | macro-CTA | target DP | DMAC conva (%) | actual DPb | Mn,thc (g mol–1) | Mn,GPCd (g mol–1) | Mw/Mnd |
|---|---|---|---|---|---|---|---|
| 1 | PDMAC40 | 60 | 60 | 40 | 3900 | 3200 | 1.12 |
| 2 | PDMAC46 | 55 | 87 | 46 | 5100 | 4600 | 1.09 |
| 3 | PDMAC58 | 50 | 96 | 58 | 5100 | 5100 | 1.09 |
| 4 | PDMAC68 | 60 | 95 | 68 | 6000 | 5700 | 1.12 |
| 5 | PDMAC77 | 70 | 93 | 77 | 6800 | 7100 | 1.11 |
a
1H NMR spectroscopy in CD3OD.
b
UV spectroscopy analysis in methanol.
c
Mn,th = (([DMAC]0/[DDMAT]0) × DMAC conv × MDMAC) + MDDMAT.
d
Determined by DMF GPC using a series of near-monodisperse poly(methyl methacrylate) calibration standards.