Development of Multifunctional Film for Greenhouse Applications in Tropical Regions

Table 3

Optical properties of monolayer films and polymer matrix film (B).

Sample no.	Compositions	UV (%T) 280–400 (nm)	PAR (%T) 400–700 (nm)	NIR (%R) 700–2500 (nm)	Haze (%H)
Commercial GH film	LDPE + 7% UV absorber	30.4 ± 2.3	89.2 ± 0.3	8.9 ± 1.3	29.1 ± 2.2
B	90% LLDPE + 10% EVA	90.3 ± 0.8	91.0 ± 0.0	8.3 ± 0.1	22.6 ± 0.1
S1	B + 1.0% UV1	28.4 ± 1.5	80.0 ± 0.5	10.1 ± 0.3	54.3 ± 0.1
S2	B + 1.0% UV2	44.6 ± 0.7	69.5 ± 0.4	13.2 ± 0.1	72.9 ± 1.6
S3	B + 1.0% NIR1	63.3 ± 1.6	77.5 ± 0.8	31.2 ± 0.5	28.5 ± 0.2
S4	B + 1.0% NIR2	45.1 ± 1.6	37.7 ± 1.9	34.8 ± 0.5	51.4 ± 1.3
S5	B + 0.5% UV1 + 0.5% UV2	29.0 ± 0.4	74.3 ± 0.1	11.8 ± 0.0	58.7 ± 0.1
S6	B + 1.0% UV1 + 0.5% UV2	16.0 ± 1.1	68.1 ± 1.0	12.0 ± 0.2	68.5 ± 0.3
S7	B + 1.0% UV1 + 1.0% UV2	13.6 ± 0.2	63.6 ± 0.4	14.4 ± 0.2	78.9 ± 0.3
S8	B + 1.5% UV1 + 1.5% UV2	9.0 ± 0.2	57.9 ± 0.2	30.5 ± 0.1	86.4 ± 0.5
S9	B + 0.5% UV1 + 0.25% NIR1	36.3 ± 1.3	77.3 ± 0.5	13.0 ± 0.0	41.2 ± 0.1
S10	B + 0.5% UV1 + 0.5% NIR1	34.6 ± 0.3	72.6 ± 0.1	16.3 ± 0.3	46.8 ± 0.1
S11	B + 1.0% UV1 + 0.25% NIR1	22.8 ± 1.3	71.2 ± 0.9	13.2 ± 0.5	44.6 ± 0.0
S12	B + 1.0% UV1 + 0.5% NIR1	23.1 ± 0.3	67.9 ± 0.4	16.0 ± 0.4	50.3 ± 0.1