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Dditive, respectively. The polycarboxylate changes its structure once again by way of the formation of perfectly defined compact blocks.Figure 12. Micrograph of the 0.two polycarboxylate compound (lot VS1): (a) 20 ; (b) 10 (source: the author).Coatings 2021, 11,16 ofFigure 13. Micrograph in the 0.six polycarboxylate compound (lot VS2): (a) 20 ; (b) 10 (source: the author).Figure 14. Micrograph of the 1.two polycarboxylate compound (lot VS3): (a) 20 ; (b) 10 (supply: the author).Figures 157 show the micrographs of your mixtures of gypsum with citric acid at dosages of 0.02 , 0.06 , and 0.12 of Oprozomib Autophagy additive, respectively. For citric acid, we can see a structure complete of internal voids, which explains the lower mechanical resistance. The size of your crystals increases with the setting time, as might be observed in the micrographs.Figure 15. Micrograph from the 0.02 citric acid compound (lot I1): (a) 20 ; (b) 10 (supply: the author).Coatings 2021, 11,17 ofFigure 16. Micrograph in the 0.06 citric acid compound (lot I2): (a) 20 ; (b) ten (source: the author).Figure 17. Micrograph with the 0.12 citric acid compound (lot I3): (a) 20 ; (b) ten (supply: the author).It has been established that the additives including Melamine compound. Polycarboxylate compound and citric acid significantly impact the dispersion of microstructure components and porosity, which can radically transform mechanical properties and hygrothermal behavior. 4.2. X-ray Chemical Analysis A basic evaluation having a Sigma 300 VP scanning micrograph and also a vacuum using the energy-dispersive X-ray strategy indicated the following chemical compositions, as reflected inside the attached figures. For analysis, the samples had been chromium-coated. We began with all the test reference Y1, Daunorubicin Autophagy namely calcium sulfate sample with no additive, with an A/Y ratio of 0.5, i.e., 50 water. Figure 18a shows a micrograph of calcium sulfate with out additive, although Figure 18b shows the chemical composition of your reference gypsum.Coatings 2021, 11,18 ofFigure 18. Analysis area and composition outcomes (supply: the author): (a) micrograph of calcium sulfate with no additive; (b) chemical composition in the reference gypsum.In Figure 19, the X-ray spectrum shows the transition of your electrons, with K being the type of transition in the highest towards the innermost layer. Chromium, as already stated, is a part of the coating material in the sample and just isn’t a part of the composition.Figure 19. X-ray spectrograph of sample Y1 of calcium sulfate without the need of additives. (source: the author).In Figure 20a , a micrograph on the mixture of gypsum with modified melamine and also the percentages of the chemical components as assessed using X-ray spectrography are shown. In Figure 21a , the micrograph of the mixture of gypsum with polycarbonate salts as well as the percentages from the chemical components as assessed by X-ray spectrography are shown. In Figure 22a , the micrograph from the mixture of gypsum with polycarboxylate and also the percentages of your chemical elements as assessed employing X-ray spectrography are shown. In Figure 23a , the micrograph in the mixture of gypsum with citric acid plus the percentages with the chemical elements as assessed employing X-ray spectrography are shown.Coatings 2021, 11,19 ofFigure 20. Analysis location and benefits for the melamine compound with calcium sulfate, showing the common sample location and X-ray spectrograph (source: the author): (a) micrograph of gypsum with melamine; (b) chemical composition; (c) chemical composition of gyps.