Study of Natural and Accelerated Weathering on Mechanical Properties of Antioxidants Modified Low Density Polyethylene Films for Greenhouse

Table 5

Elastic modulus of LDPE films under natural and accelerated weathering.

Sample	Elastic modulus (MPa)
	Accelerated weathering			Natural weathering
	0 h	75 h	100 h	0 day	90 days
Neat LDPE	305.7	286.0	279.8	305.7	67.9
GR-0.2	363.9	257.5	231.7	363.9	132.3
GR-0.5	91.8	119.8	138.9	91.8	96.3
GR-2.0	258.0	101.1	63.2	258.0	56.4
AN-0.2	425.6	215.8	204.4	425.6	63.1
AL-0.2	241.9	255.7	279.3	241.9	371.4
AN/AL-0.1/0.1	211.3	208.6	204.5	211.3	95.23