Plasma Surface Treatment of Commercial Polymers for use in Food Packaging
نویسندگان
چکیده
In this work plasma immersion (PI) was applied to Low Density Polyethylene (LDPE) and Polyethylene Terephtalate (PET) to improve their characteristics for food packaging. The effects of plasma composition were investigated by comparing treatments using N2 and SF6. Different treatment times were used at a total reactor pressure of 1.33 Pa composed by a steel vacuum chamber containing two internal circular electrodes. Radiofrequency Power (13.56 MHz at 150 W) was applied to the lower electrode while the upper electrode was grounded. Preliminary results show the dependences of parameters with the new surface obtained by PI. Thus, is possible to obtain a hydrophilic or hydrophobic surface.
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