The films were exposed to controlled accelerated weathering conditions in an industrial test chamber, Q-Lab. The irradiation source was composed of UVA fluorescent lamps, UVA-340. The weathering cycle was defined according to standard ASTM G-154, 8 h under UV light emission 0.89 W/m2 at 50 °C and 4 h in the dark under condensed water at 60 °C.
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