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Effect of cross-linking by glutaraldehyde on pencil hardness of PVA/S blend.
| Formulation 1 |
Formulation 2 |
||
|---|---|---|---|
| Blends | Pencil hardness | Blends | Pencil hardness |
| PVA/S-07 | H | PVA/S-08 | 2H |
| PVA/S-GLU.01 | 7H | PVA/S-GLU.04 | 7H |
| PVA/S-GLU.02 | 8H | PVA/S-GLU.05 | 8H |
| PVA/S-GLU.03 | 8H | PVA/S-GLU.06 | 9H |
