Table 5.
Tensile properties of the PAM/CNC composite films cast from the solutions with different pH values.
| Sample | Young's modulus (E), MPa | Elongation at break (εb), % | Tensile strength at break (σb), MPa | Ultimate tensile strength (σmax), MPa |
|---|---|---|---|---|
| PAM | ||||
| рН 2.5 | 1090 | 7.2 | 46.6 | 48.8 |
| рН 6.5 | 1440 | 6.2 | 52.8 | 59.9 |
| рН 10.0 | 1230 | 6.5 | 57.2 | 62.9 |
| PAM/CNC-10.3 | ||||
| рН 2.2 | 1140 | 3.8 | 33.4 | 33.4 |
| рН 6.2 | 1770 | 9.5 | 38.9 | 54.4 |
| рН 10.0 | 2050 | 8.8 | 41.0 | 57.2 |
| PAM/CNC-29.8 | ||||
| рН 1.8 | 570 | 2.9 | 30.6 | 30.6 |
| рН 6.0 | 2140 | 7.3 | 58.8 | 72.6 |
| рН 10.0 | 2100 | 6.3 | 55.4 | 66.0 |
| PAM/CNC-50.3 | ||||
| рН 2.0 | 840 | 0.6 | 5.1 | 5.1 |
| рН 6.1 | 1510 | 2.1 | 31.1 | 31.1 |
| рН 10.0 | 1710 | 1.9 | 33.4 | 33.4 |