Surface characteristic of poly(p‐phenylene terephthalamide) fibers with oxygen plasma treatment

Abstract

Oxygen plasma is widely employed for modification of polymer surfaces. Plasma treatment process is a convenient procedure that is also environmentally friendly. This study reports the effects of oxygen plasma treatment on the surface properties of poly(p-phenylene terephthalamide) (PPTA) fibers. The surface characteristics before and after oxygen plasma treatment were analyzed by XPS, atomic force microscopy (AFM) and dynamic contact angle analysis (DCAA). It was found that oxygen plasma treatment introduced some new polar groups (O-C O) on the fiber surface, increased the fiber surface roughness and changed the surface morphologies obviously by plasma etching and oxidative reactions. It is also shown that the fiber surface wettability was improved significantly by oxygen plasma treatment.

Improvement of interfacial adhesion for plasma‐treated aramid fiber‐reinforced poly(phthalazinone ether sulfone ketone) composite and fiber surface aging effects

“…It seems that there exists an optimum plasma treatment time under discharge power of 200 W for aramid fiber surfaces, which is in accordance with the results derived from the XPS analysis and AFM observation in Ref. [4].…”

“…[3] In our previous work, it has been reported that oxygen plasma treatment is an effective method to introduce some new polar groups (O-C O) to the fiber surface, increase the fiber surface roughness, and improve the fiber surface wettability. [4] All of these would be a benefit for improving the interfacial adhesion in a composite system. [5] Moreover, the modified fiber surface by oxygen plasma treatment may suffer from aging after being stored a period of time in air at room temperature, leading to a change in the fiber surface chemical composition and degradation of surface wettability.…”

Comparison of Radio Frequency and Microwave Plasma Treatments on LED Chip Bond Pad for Wire Bond Application

“…This is because larger contact area can contribute to a higher degree of the mechanical interlocking between wire bond interfaces [48]. Thus, bond pads having cleaner surface after argon plasma treatment are able to enlarge the contact area and improve the interfacial adhesion of wire bond significantly.…”

Effect of oxygen plasma treatment on the bonding strength of CFRP/aluminum foam composite

“…In particular, the ratios of each peak area were altered compared with those of the untreated CFRP. The ratios of the area of the C C peak, C O peak, C O and O C O peaks were 50.7%, 30.1%, 9.4%, and 7.4%, respectively [16]. Consequently, the oxygen plasma treatment changed the chemical components on the CFRP surface and the newly formed functional groups improved the surface polarity and its hydrophilicity [16][17].…”