In this research, the polypropylene (PP) sheets used for automotive bumper surface were treated using two methods: air atmospheric gliding arc plasma and flame modifications. Atomic force microscopy was applied to study the morphology of surfaces before and after treatment processes. While calculating the surface free energy (SFE), contact angle of the surfaces was measured, and the chemical composition of the PP surface was analyzed using X‐ray photoelectron spectroscopy. Surface modifications by gliding arc plasma increased the ratio of the oxygen and nitrogen atoms on the surface by 100%, indicating that polar chemical functionalities form on the surface. The surface morphology was highly affected by gliding arc plasma treatments, which triggered an impact on roughness and etching. It was also found that the SFE was drastically increased by certain modifications. Noticeable improvement was also observed in wettability by the gliding arc plasma technique. In the next stage, polyurethane paints were coated on the treated and untreated PP surfaces. Then, we examined the flame and gliding arc plasma treatments' effect on coating properties of PP bumper, adhesion analysis, water immersion resistance, and sulfuric acid resistance. Finally, high‐pressure carwash test and gloss analysis were conducted on the treated and untreated coated sheets, respectively.
The objective of the current study is to examine plasma pyrolysis as a suitable method for producing value-added products from dairy waste. With the use of this technique, hazardous materials of various kinds could be changed into non-hazardous products that complied with the majority of emission requirements. The creation of high-quality syngas is another advantage of using the suggested disposal strategy. As can be seen in figure 1, the outcomes of the trials showed that not only is it feasible to dispose of dairy waste using a plasma incinerator, but the resulting products and synthetic gases are also highly desirable. These gases that arise are frequently safe for the environment. They can be employed directly or indirectly in the energy generation sectors, which is another excellence.
Figure 1
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