Research Article
Foaming Behaviour, Structure, and Properties of Polypropylene Nanocomposites Foams
Table 1
Cellular characterization results of the unfilled (PP), montmorillonite (PP-MMT), and carbon nanofibre (PP-CNF) polypropylene foams.
| Code | Foam density (kg·m-3) | | | | (m) | (m) | AR | Cell density (cells·cm-3) |
| PP | 346 ± 9 | 0.62 | 0.38 | — | 194 ± 7 | 175 ± 1 | 1.1 | 4.71 × 104 | 311 ± 9 | 0.66 | 0.34 | — | 177 ± 2 | 196 ± 1 | 0.9 | 4.63 × 104 | 268 ± 6 | 0.71 | 0.29 | — | 241 ± 9 | 266 ± 12 | 0.9 | 3.52 × 104 | 261 ± 13 | 0.72 | 0.29 | — | 243 ± 14 | 239 ± 2 | 1.0 | 3.42 × 104 | 236 ± 7 | 0.75 | 0.25 | — | 456 ± 5 | 479 ± 10 | 1.0 | 1.30 × 104 | 189 ± 8 | 0.80 | 0.20 | — | 564 ± 6 | 523 ± 11 | 1.1 | 9.13 × 103 |
| PP-MMT | 256 ± 8 | 0.72 | 0.28 | 0.003 | 146 ± 3 | 160 ± 7 | 0.9 | 9.01 × 104 | 245 ± 5 | 0.73 | 0.27 | 0.003 | 169 ± 13 | 156 ± 12 | 1.1 | 8.78 × 104 | 240 ± 10 | 0.74 | 0.26 | 0.003 | 190 ± 12 | 164 ± 15 | 1.2 | 6.56 × 104 | 238 ± 12 | 0.74 | 0.25 | 0.003 | 296 ± 7 | 211 ± 4 | 1.4 | 3.57 × 104 | 220 ± 7 | 0.76 | 0.24 | 0.003 | 218 ± 6 | 204 ± 8 | 1.1 | 4.19 × 104 | 208 ± 4 | 0.78 | 0.22 | 0.003 | 289 ± 12 | 206 ± 6 | 1.4 | 3.98 × 104 | 176 ± 3 | 0.81 | 0.19 | 0.002 | 410 ± 12 | 293 ± 12 | 1.4 | 1.97 × 104 |
| PP-CNF | 265 ± 10 | 0.70 | 0.29 | 0.01 | 569 ± 25 | 508 ± 19 | 1.1 | 8.13 × 103 | 270 ± 10 | 0.69 | 0.29 | 0.02 | 462 ± 28 | 394 ± 22 | 1.2 | 1.35 × 104 | 290 ± 8 | 0.68 | 0.29 | 0.03 | 239 ± 10 | 258 ± 12 | 0.9 | 3.05 × 104 |
|
|