Table 1.
Number-average molecular weight (Mn), number-average degree of polymerization (DP), and molecular weight distribution (Mw/Mn) for the samples.
| Sample | Mn(theo) a × 104 (g/mol) | Mn(NMR) × 104 (g/mol) | DP(NMR) | Mn(GPC) × 104 (g/mol) | Mw/Mn |
|---|---|---|---|---|---|
| PMPC | 0.613 | 0.621 | 20 | 0.735 b | 1.03 b |
| P20M190 | 4.82 | 4.95 | 190 | 2.40 c | 1.05 c |
| P20A196 | 4.68 | 4.85 | 196 | 2.77 b | 1.07 b |
a Calculated using Equation (4). b Estimated from gel-permeation chromatography (GPC) using phosphate buffer (50 mM, pH 9.0) containing 10 vol % acetonitrile as eluent. c Estimated from GPC using aq. 0.30 M Na2SO4 containing 0.50 M acetic acid as eluent.