Table 3.
Characterisation of C3A-CXT polymers obtained from the polymerisation of C3A and various thiols using 1 mol% base at [C3A] = 1 M.
| Entry | Solvent | Base | %cisa | Mw (kg mol−1)b | Ε (MPa) | εbreak (%) | UTS (MPa) | Tg (°C)c |
|---|---|---|---|---|---|---|---|---|
| C3A-C3T(cis) | DMSO/MeOH (2/1) | DBU | 82 | 92.7 | 1547.8 ± 44.4 | 24 ± 3 | 78.6 ± 1.1 | 107 |
| C3A-C8T(cis) | DMSO/MeOH (2/1) | DBU | 79 | 102.9 | 939.2 ± 67.0 | 217 ± 11 | 63.7 ± 3.7 | 86 |
| C3A-C10T(cis) | DMSO/MeOH (2/1) | DBU | 78 | 80.5 | 927.7 ± 26.7 | 313 ± 19 | 69.4 ± 3.7 | 71 |
| C3A-CDEGT(cis) | DMSO/MeOH (2/1) | DBU | 78 | 140.4 | 1623.7 ± 77.0 | 318 ± 70 | 78.1 ± 2.4 | 64 |
a%cis content determined by 1H NMR spectroscopic analysis.
bMw determined by SEC (DMF, 0.5% w/w NH4BF4) analysis against poly(methyl methacrylate) (PMMA) standards.
cReported from the DSC thermograms of 2nd heating cycle. Mechanical data (Ε, ε-break and UTS) calculated from n ≥ 3 samples. ± represents 1 s.d.