Research Article
Development of Multifunctional Film for Greenhouse Applications in Tropical Regions
Table 5
Mechanical properties of monolayer films (S9-S10) and 3-layer laminated films (M1–M8).
| | Sample no. | Compositions (outer/middle/inner) | Tensile strength (MPa) | Modulus (MPa) | Elongation at break (%) | Toughness (mJ/mm3) |
| | S9 | B + 0.5% UV1 + 0.25% NIR1 | 30.4 ± 1.0 | 126.2 ± 5.4 | 726.1 ± 56.6 | 116.9 ± 11.7 | | S10 | B + 0.5% NIR1 + 0.5% UV1 | 32.1 ± 0.6 | 175.5 ± 18.6 | 850.5 ± 16.2 | 134.0 ± 4.0 | | M1 | B/B/B | 25.0 ± 1.5 | 298.7 ± 18.0 | 716.3 ± 11.7 | 99.3 ± 5.3 | | M2 | 0.5% NIR1/0.5% UV1/B | 18.6 ± 2.0 | 207.4 ± 20.1 | 647.6 ± 49.6 | 77.4 ± 8.4 | | M3 | 0.5% NIR1/1.0% UV1/B | 23.3 ± 3.4 | 234.5 ± 24.0 | 806.6 ± 63.1 | 104.7 ± 13.5 | | M4 | 0.5% UV1/0.5% NIR1/B | 21.4 ± 0.7 | 257.9 ± 16.1 | 671.4 ± 17.1 | 84.8 ± 2.5 | | M5 | 0.5% NIR2/0.5% UV1/B | 23.1 ± 1.3 | 232.1 ± 14.4 | 739.1 ± 7.6 | 93.4 ± 4.0 | | M6 | 0.3% NIR1/0.5% UV1/B | 17.8 ± 1.6 | 262.1 ± 25.1 | 610.9 ± 32.6 | 70.9 ± 6.2 | | M7 | 0.3% NIR1/1.0% UV1/B | 20.0 ± 2.8 | 278.9 ± 11.0 | 647.8 ± 39.1 | 80.5 ± 8.1 | | M8 | 0.3% NIR2/0.5% UV1/B | 24.1 ± 1.9 | 242.6 ± 18.6 | 747.4 ± 42.4 | 98.1 ± 8.5 |
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B = 90%LLDPE + 10% EVA.
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