Table 3.
Preparative GPC analysis results of the reaction mixtures obtained by click cyclization reactions of N3-PCLn-C≡CH precursors.
| Precursor Reactant | Reaction Mixture a | ||
|---|---|---|---|
| c-PCL b (%) | Cyclic Byproducts c (%) | Linear Polymers d (%) | |
| N3-PCL20-C≡CH | 37.7 | 8.7 | 53.6 |
| N3-PCL30-C≡CH | 38.1 | 3.8 | 58.1 |
| N3-PCL50-C≡CH | 37.9 | 6.3 | 55.8 |
| N3-PCL70-C≡CH | 39.5 | 8.3 | 52.2 |
| N3-PCL90-C≡CH | 38.9 | 0.2 | 60.9 |
| N3-PCL100-C≡CH | 40.2 | 4.0 | 55.8 |
| N3-PCL150-C≡CH | 40.5 | 2.6 | 56.9 |
| N3-PCL200-C≡CH | 41.1 | 0.4 | 58.5 |
a Reaction mixture obtained by click cyclization reaction. b Cyclic PCL obtained by the separation and fractionation using a preparative GPC system after treated with PS-C≡CH resins. c Cyclic byproducts obtained by the separation and fractionation using a preparative GPC system after treated with PS-C≡CH resins. d Sum of the unreacted precursor polymers and possible linear byproducts removed by treatment with PS-C≡CH resins; this was estimated from the yield of cyclic PCL product and the preparative GPC analysis result.