Modification of bio-composite coating by dry electrostatic spray

• Main Authors: Issa, Rasha Abdul-hasan, Al-Shroofy, Mohanad N., Al-Kaisy, Hanna A.
• Format: Conference Proceeding
• Language: English
• Subjects: Additives; Ceramic powders; Composite materials; Glass transition temperature; Miscibility; Polymethyl methacrylate; Stainless steels; Substrates; Titanium dioxide
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0092336

The Poly methyl methacrylate (PMMA) powders are used to preparing the bio-composite coatings by electrostatic spray coating on 316L stainless steel with dimensions of (2×2×1 mm) was used as substrates. Different weight percentages dry powders were mixed to form a composite mixture consisted of Al2O3and TiO2 with of PMMA matrix material, the ceramic powders additives were studied in four groups, namely, A (2 % wt Al2O3and 3% wt TiO2) with 95% wt PMMA), B (4 % wt Al2O3and 6% wt TiO2) with 90% wt PMMA), C (6 % wt Al2O3and 9% wt TiO2) with 85% wt PMMA) and D (8% wt Al2O3and 12% wt TiO2) with 80% wt PMMA). The samples of all groups were cured at (140 C°) for (2 hr). The coating morphology from SEM was characterized and analyzed for bio-composite coating with examined FTIR and DSC. The results show improving the performance of coating base-PMMA by depositing a ceramic material on the surface of the 316L SS implant. The results in DSC test showed that the maximum value of glass transition temperature was obtained in the coated composite materials for (Group C) specimen and no exhibited significant other endothermic appears for the DSC scan range. While the results in FTIR test showed no other new peak or peak shifts appear for all coated composite specimens were observed and these give good indication of improving the state of miscibility for all groups specimens.