| Formulation 1 | Formulation 2 | ||
| Blends | Ultimate stress | Blends | Ultimate stress |
| PVA/S-07 | 7.6 | PVA/S-08 | 7.9 |
| PVA/S-GLY.01 | 8.9 | PVA/S-GLY.04 | 9.9 |
| PVA/S-GLY.02 | 9.7 | PVA/S-GLY.05 | 10.8 |
| PVA/S-GLY.03 | 14.7 | PVA/S-GLY.06 | 16.4 |