Table 1. Results from Polymerization of IBVE from Poly(PhAVE-AcOH)a.
| reaction time (h) | conversion (%)b | Mn,theoryc(g mol–1) | DPn,theoryd | Mn,SECe(g mol–1) | Mw/Mne | Mn,MALLSf(g mol–1) | fb (%) |
|---|---|---|---|---|---|---|---|
| poly(PhAVE-AcOH) | 69,300 | 42,000 | 1.02 | 69,000 | |||
| 1 | 27 | 745,000 | 27 | 159,000 | 1.05 | 395,000 | 60 |
| 2 | 40 | 1,071,000 | 40 | 215,000 | 1.08 | 890,000 | 66 |
| 3 | 76 | 1,972,000 | 76 | 297,000 | 1.10 | 1,330,000 | 62 |
| 12 | 98 | 2,523,000 | 98 | 356,000 | 1.07 | 1,706,000 | 67 |
a
Polymerization was conducted with EtAlCl2/dioxane in toluene at −35 °C, [IBVE]0 = 1.0 mol L–1; [PhAVE-AcOH*]0/[IBVE]0/[EtAlCl2]0/[dioxane]0 = 1/100/5/200; [PhAVE-AcOH*], concentration based on repeating units. The reaction was quenched with a solution of sodiomalonic ester in toluene/dioxane.
b
Determined by 1H NMR.
c
Calculated from Mn,theory = ([IBVE]0/[PhAVE-AcOH*]0 × (molecular weight)IBVE × (conversion)IBVE × (DPn)poly(PhAVE-AcOH)) + (molecular weight)poly(PhAVE-AcOH).
d
Calculated from DPn,theory of polyIBVE side chains = [IBVE]0/[PhAVE-AcOH*]0 × (conversion)IBVE.
e
Estimated by PSt-calibrated SEC in THF.
f
Estimated by SEC in THF with a multi-angle laser light scattering detector.