Development of Multifunctional Film for Greenhouse Applications in Tropical Regions

Table 4

Optical properties of 3-layer laminated films.

Sample no.	Compositions (outer/middle/inner)	UV (%T) 280–400 (nm)	PAR (%T) 400–700 (nm)	NIR (%R) 700–2500 (nm)	Haze (%H)
S10	B + 0.5% NIR1 + 0.5% UV1	34.6 ± 0.3	72.6 ± 0.1	16.3 ± 0.3	46.8 ± 0.1
M1	B/B/B	46.8 ± 1.6	88.8 ± 0.1	8.5 ± 0.1	39.5 ± 0.1
M2	0.5% NIR1/0.5% UV1/B	28.7 ± 2.4	74.6 ± 1.5	14.5 ± 0.4	58.2 ± 0.1
M3	0.5% NIR1/1.0% UV1/B	13.7 ± 2.1	62.6 ± 2.4	16.2 ± 1.9	72.3 ± 0.8
M4	0.5% UV1/0.5% NIR1/B	29.9 ± 2.2	75.2 ± 1.4	14.3 ± 0.8	55.9 ± 0.4
M5	0.5% NIR2/0.5% UV1/B	27.3 ± 2.4	68.6 ± 1.9	19.8 ± 0.8	43.3 ± 0.5
M6	0.3% NIR1/0.5% UV1/B	32.7 ± 3.0	78.9 ± 1.3	12.1 ± 0.4	58.1 ± 0.1
M7	0.3% NIR1/1.0% UV1/B	13.7 ± 1.3	66.9 ± 3.9	14.0 ± 2.8	70.5 ± 0.7
M8	0.3% NIR2/0.5% UV1/B	30.6 ± 2.5	73.8 ± 2.3	17.5 ± 0.8	42.6 ± 0.1

B = 90%LLDPE + 10% EVA.