PSI - Issue 16

Barbara Nasiłowska et al. / Procedia Structural Integrity 16 (2019) 230 – 236

235

Barbara Nasiłowska et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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c

a

b

Fig. 7. FTIR characteristics of glass surface: (a) histochemical map of GO deposited on glass, (b) histochemical map of GO on steel, (c) histochemical map of acrylic resin on steel S235.

Due to glass surface 1044 cm -1 peak assigned to C-O stretching vibrations was disqualified as too similar for the glass itself. It can be observed that carbon based layer is deposited on both glass and steel surface. This represents a layout of GO. Fig. 3c shows layout of acrylic resin on steel. Absorption peak at 1723 cm -1 was taken for analysis. Based on histochemical maps authors concluded that acrylic resin did not influence the steel substrate. No other absorption peaks were observed than resin, GO, glass and steel.

4. Conclusions

Presented paper shows surface morphology analysis of glass and steel and its modification with GO layer. Experiments showed that GO deposition substantially influenced wettability by water. Contact angle was changed after GO deposition about 21% on steel and 82% on glass indicating increasing hydrophobicity of the surface. It was observed that GO deposition on steel cause decrease in surface roughness for 10, 22, 19 and 11% for Rq, Rv, Rz and Ra parameters respectively. Different behavior was observed on glass substrate where increase in surface roughness was recorded for about 20, 157, 40, 107 and 15% for Rq, Rp, Rv, Rz and Ra parameters respectively. The highest morphological changes were observed for steel with corrosion substrates. Roughness parameters were larger for about 181, 232, 190, 227 and 174% for Rq, Rp, Rv, Rz and Ra parameters respectively as compared to reference sample. Therefore GO deposition play substantial role for maintaining steel integrity and utility. No change in contact angle values was recorded for acrylic resin deposited on steel +GO substrate as compared to pure steel. Average change (10%) in wetting was recorded on glass after GO deposition. This change might be connected with the presence of polar groups interaction between water, acrylic resin and GO. FTIR analysis showed no absorption peaks other than acrylic resin, GO and glass itself. That suggest that no interactions or side effects were taking place on examined surfaces. Cai, J., Zhang, M., Wang, D., Li, Z., 2018. Engineering Surface Wettability of Reduced Graphene Oxide to Realize Efficient Interfacial Photocatalytic Benzene Hydroxylation in Water ACS. Sustainable Chemistry and Engineering 6 (11), 15682 – 15687 Fu, J., Mengjie, Z., Liu, L., Ao, Y., 2019. Layer-By-Layer Electrostatic Self-Assembly Silica/Graphene Oxide onto Carbon Fiber Surface for Enhance Interfacial Strength of Epoxy Composites. Materials Letters 236, 69 – 72. Geim, A. K., 2009. Graphene: Status and Prospects Science, 3.24 (5934), 1530 – 1534. Ho, C.Y., Huang, S.M., Lee, S.T. Chan, Y.J., 2019. Evaluation of Synthesized Graphene Oxide As Corrosion Protection Film Coating on Steel Substrate By Electrophoretic Deposition, Applied Surface Science 477, 226 – 231. Ji, H., Jong, P., Park, M., 2014. Electrophoretic Deposition of Graphene Oxide on Mild Carbon Steel For Anti-Corrosion Application, Surface And Coatings Technology, 254 (15), 167 – 174. Lim, T., Ju, S., 2017. Control of Graphene Surface Wettability by Using CF4 Plasma, Surface and Coatings Technology 328 (15), 89 – 93. Melios, C., Giusca, C. E., Panchal, V., Kazakova, O., 2018. Water on graphene: review of recent progress, 2D Materials 5 (2), 022001. References