Table 7.
Molecular characteristics of the PS(PHIC)2 miktoarm star copolymers and the PS-b-(PI-g-PHIC)block graft terpolymer and their micellar characteristics in n-heptane.
| Sample | Mw × 10−3 a | Ð b | %S/H/I, wt c | A2 a × 10−3 a | (Mw × 10−3)mic a | Nw | THF | n-heptane | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| D d cm2/s d × 107 | Rh d, nm | D e cm2/s d × 107 | Rh1 e, nm | Rh2 e, nm | |||||||
| PS(PHIC)230/17/83 | 29.7 | 1.18 | 17.0/83.0/0 | 0.1 | 5000 | 168 | 5.74 | 8.3 | 2.53 | 21.6 (86.0%) | 144.0 (14%) |
| PS(PHIC)233/17/83 | 32.9 | 1.13 | 17.1/82.9/0 | −1.5 | 1000 | 30.4 | 2.65 | 7.8 | 2.68 | 20.4 (90.5%) | 400.9 (9.5%) |
| PS(PHIC)236/20/80 | 36.4 | 1.13 | 20.4/79.6/0 | −1.1 | 333.0 | 9.1 | 3.39 | 14.1 | 1.75 | 31.1 (75.0%) | 62.7 (25.0%) |
| PS-b-(PI-g-PHIC) | 91.6 | 1.33 | 14.0/82.0/4.0 | −0.80 | 103.0 | 1.1 | 3.99 | 11.9 | 2.00 | 27.2 | - |
a By LALLS, b by SEC in THF, c by 1H NMR in CDCl3 at 25 °C, d by DLS in THF and e by DLS in n-heptane and CONTIN analysis.