AV, viscosity, and water-dispersible stability of WRPEs with different PET/GL molar ratios and PA contents.
| Sample | Molar ratio of PET/GL | PA content (%) | AV (mg KOH g−1) | Viscosity (mpa s) | Water-dispersible stability (d) |
|---|---|---|---|---|---|
| WRPE11 | 1.6 | 5 | 25.9 | 448 | — |
| WRPE12 | 7.5 | 32.8 | 473 | — | |
| WRPE13 | 10 | 44.2 | 507 | — | |
| WRPE14 | 12.5 | 49.3 | 539 | 3 | |
| WRPE15 | 15 | 64.6 | 580 | 10 | |
| WRPE21 | 1.3 | 5 | 28.4 | 393 | 10 |
| WRPE22 | 7.5 | 35.4 | 420 | 25 | |
| WRPE23 | 10 | 46.2 | 454 | Over 30 | |
| WRPE24 | 12.5 | 53.6 | 488 | Over 30 | |
| WRPE25 | 15 | 69.6 | 524 | Over 30 | |
| WRPE31 | 1.0 | 5 | 32.4 | 349 | 30 |
| WRPE32 | 7.5 | 39.1 | 366 | Over 30 | |
| WRPE33 | 10 | 53.5 | 403 | Over 30 | |
| WRPE34 | 12.5 | 59.2 | 432 | Over 30 | |
| WRPE35 | 15 | 74.2 | 459 | Over 30 |