期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 24, 期 3-4, 页码 305-341出版社
TAYLOR & FRANCIS INC
DOI: 10.1081/DIS-120021793
关键词
polymer surface modification; plasma treatment; plasma processing; surface treatment; polymer surfaces; surface analysis; X-ray photoelectron spectroscopy (XPS); surface sites; treatment kinetics; surface kinetics; metallized plastics; metal-polymer adhesion; nitrogen plasma; nitrogen; oxygen plasma; oxygen; polymer; polyester; polystyrene (PS); polyethylene (PE); polycarbonate (PC); polyethylene naphthalate (PEN); polyethylene terephthalate (PET)
Plasma treatment of polymers encompasses a variety of plasma technologies and polymeric materials for a wide range of applications and dates back to at least the 1960s. In this article we provide a brief review of the United States patent literature on plasma surface modification technologies and a brief review of the scientific literature on investigations of the effects of plasma treatment, the nature of the plasma environment, and the mechanisms that drive the plasma-surface interaction. We then discuss low-radio-frequency capacitively coupled nitrogen plasmas and their characteristics, suggesting that they provide significant plasma densities and populations of reactive species for effective plasma treatments on a variety of materials, particularly when placing the sample surface in the cathode sheath region. We further discuss surface chemical characterization of treated polymers, including some results on polyesters treated in capacitively coupled nitrogen plasmas driven at 40 kHz. Finally, we connect plasma characterization with surface chemical analysis by applying a surface sites model to nitrogen uptake of poly(ethylene terephthalate) (PET) and poly(ethylene naphthalate) (PEN) treated in a 40kHz nitrogen plasma. This example serves to suggest an interesting practical approach to comparisons of plasma treatments. In addition, it suggests an approach to defining the investigations required to conclusively identify the underlying treatment mechanisms.
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