Table 1.
Molecular weights and chain lengths of copolymers
| Sample | Mn (g/mol)a | DP (DMAEMA)b | DP (tBA)b | PDIc |
|---|---|---|---|---|
| PF127-Br | 10600 | 1.45 | ||
| PF127-pDMAEMA | 33823 | 135 | 1.34 | |
| PF127-p(DMAEMA-tBA) | 34957 | 130 | 15 | 1.40 |
Notes:
a
The number-averaged molecular weight (Mn) of copolymers was done by gel permeation chromatography;
b
the number of DMAEMA (or tBA) per copolymer chain was estimated by proton nuclear magnetic resonance;
c
PDI = Mw/Mn measured by GPC, where Mw is the weight-averaged molecular weight.
Abbreviations: DP, degree of polymerization; DMAEMA, (2-dimethyl amino)ethyl methacrylate; tBA, tert-butyl acrylate; PDI, polydispersity index; PF127-Br, di-2-bromoisobutyryl-pluronic F127; PF127-pDMAEMA, pluronic F127-poly (dimethylaminoethyl methacrylate); PF127-p(DMAEMA-tBA), pluronic F127-poly (dimethylaminoethyl methacrylate-tert-butyl acrylate); GPC, gel permeation chromatography.