Copper sulfate pentahydrate was obtained from El-Goumhouria Co., Cairo, Egypt. Ascorbic acid was obtained from Merck Chemical Co., Germany. Tween 80 surfactant (T80) was obtained from MP Biomedical Co., India. Low density polyethylene pellets were obtained from El Sewedy Plastic Manufacturing (SEDPLAST), Tenth of Ramadan City, Cairo, Egypt. Ethylene vinyl acetate containing 18% of vinyl acetate was obtained from Arkema Inc., North America. Bidistalled water was utilized throughout the preparation steps.
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