Table 4. PVAc10-b-PVP Block Copolymers Prepared for This Study.
| PVAc-b-PVP | [M]/[CTA]a | NVP (mL) | conv.b (%) | Mn,NMRc (g mol–1) | Mn,DMFd (g mol–1) | Mn,THFe (g mol–1) | Mw/Mnd |
|---|---|---|---|---|---|---|---|
| PVA30-b-PVP60 | 240 | 3 | 18.3 | 4730 | 5380 | N/A | 1.16 |
| PVA10-b-PVP27 | 10 | 0.75 | 18.3 | 1970 | 3080 | 570 | 1.37 |
| PVA10-b-PVP90 | 30 | 1.90 | 100 | 4190 | 4600 | 740 | 1.59 |
| PVA10-b-PVP72 | 50 | 3.79 | 56.8 | 3640 | 7479 | 760 | 1.76 |
| PVA10-b-PVP85 | 75 | 5.78 | 43.2 | 3970 | 10060 | 690 | 1.99 |
a
[Total monomer]/[RAFT agent] ratio; polymerization conducted in 5 mL of 1,4-dioxane and varying concentrations of N-vinylpyrrolidone.
b
Determined by 1H NMR spectroscopy.
c
Determined by 1H NMR of the copolymers after precipitation and drying.
d
Determined by SEC in THF using PMMA standards.
e
Determined by 1H NMR spectroscopy of the PVAc-b-PVP block copolymers.