Surface and bulk modification of melamineformaldehyde (MF-R) microparticles suspended in a complex plasma

Raman spectroscopy of melamine‐formaldehyde resin microparticles exposed to processing in complex plasma

“…Nevertheless, the fact of a particles' surface destruction seems to be beyond doubt: it is clearly evidenced by the above presented results of Raman spectroscopy and confirmed by the earlier obtained data on mass spectrometry (MS) and atomic force microscopy (AFM). [5,7] Particularly, as was noted in the 'Introduction', the MS study of the plasma gaseous medium composition, after its interaction with MF-R particles, indicates a change in this composition because of the extraction of some MF-R constituents into plasma, [7] and AFM evidences the particle surface disorder (roughness increase) resulting from the plasma active component impact. [5]…”

“…[5,7] Particularly, as was noted in the 'Introduction', the MS study of the plasma gaseous medium composition, after its interaction with MF-R particles, indicates a change in this composition because of the extraction of some MF-R constituents into plasma, [7] and AFM evidences the particle surface disorder (roughness increase) resulting from the plasma active component impact. [5]…”

“…plasma technology, new materials, nanotechnology and so forth) . Ordered plasma‐dust structures (OPDSs) consist of the charged in plasma dust particles, whose dimensions might be from tenths to several hundred microns …”

“…[1,2] Ordered plasma-dust structures (OPDSs) consist of the charged in plasma dust particles, whose dimensions might be from tenths to several hundred microns. [1][2][3][4][5] At present, to examine an OPDS, the particles made of melamine-formaldehyde resin (MF-R), see Fig. 1, are frequently used.…”

“…A particular problem is to explore the opportunities and mechanisms of modification of the substance under the specific conditions, for instance, in plasmas under different pressures, in dissimilar gases, etc. In the articles, the study of the surface structure of the MF‐R microparticles has been carried out, as well as the study of the composition of the complex plasma gaseous medium with the same type of microparticles has been conducted. The results of the research allowed quantitative estimation of the impact of the plasma environment on the surfaces of microparticles and identification of the components of material that come out directly from the particles into the discharge during the time of exposure, by means, for example, mass spectrometry of dusty plasma (see, e.g.…”