The investigation of argon plasma surface modification to polyethylene: Quantitative ATR-FTIR spectroscopic analysis

This paper studied the surface modification of argon plasma to polyethylene by using ATR-FTIR analysis. The mass loss ratio has maximum value at discharge time of 70–120 s or discharge power of 62 W by using argon plasma treatment for polyethylene. New surface structure was formed after polyethylene was treated by argon plasma. The peroxide bond peak area also has maximum value at discharge time of 70–120 s or discharge power of 62 W. The Cdouble bond; length as m-dashC nonsaturated double bond absorb peaks were appeared at 1640 cm−1, 1549 cm−1 and 1528 cm−1 after polyethylene treated by argon plasma. The Cdouble bond; length as m-dashC nonsaturated double bond absorb peak area has minimum value at discharge time of 60–70 s and the power of 65 W. The Cdouble bond; length as m-dashC nonsaturated double bond absorb peak area has maximum value at discharge power of 62–72 W and the discharge time of 2 min. The absorption peak intensity of 2916 cm−1 methylene nonsymmetry stretch vibration, 2848 cm−1 methylene symmetry stretch vibration, 1463 cm−1 methylene nonsymmetry changing angle vibration, and 719 cm−1 methylene swing in plane vibration was decreased greatly. The four absorption peaks intensity has maximum value at discharge time of 120 s or discharge power of 62 W.