Optimization of Surface Properties of Κ-Carrageenan/PVA/Eggshell Nanobiocomposites Coated 17-4 PH Stainless Steel Foam

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Karakuş S., Beköz Üllen N., Albayrak F. I., Insel M. A., Kilislioğlu A.

3rd International Conference on Physical Chemistry & Functional Materials, Malatya, Turkey, 22 - 24 September 2020, pp.25-32

  • Publication Type: Conference Paper / Full Text
  • City: Malatya
  • Country: Turkey
  • Page Numbers: pp.25-32
  • Yıldız Technical University Affiliated: Yes


The bio-based nanocomposites are receiving great attention due to their large surface areas, nano-scale dispersion, low-cost, biodegradable, and biocompatible nature. In this study, a green bio-based nanocomposite as Kappa-Carrageenan/PVA/eggshell nanobiocomposite was synthesized by a combination of microwave and ultrasound method. The synthesized nano eggshell based nanobiocomposite and nanobiocomposite coated 17-4 PH stainless steel foam was characterized using SEM, BET, and FTIR techniques. Furthermore, the 17-4 PH steel foams, used in various applications such as the aerospace, chemical, and biomedical applications, were prepared using a space holder method with powder metallurgy approach [4]. According to our results, we found that nanobiocomposites exhibited an irregular shape with a diameter of 299.7 nm while the surface area was 109.201 m2 /g. The novelty of this study was to prepare the novel nano eggshell based nanobiocomposite coated 17-4 PH stainless steel foam using a dip coating method and investigated the surface tension characteristics. The effect of the experimental parameters such as the mass fraction (2%, 5%, and 10%) of eggshell, the mass fraction (2% - 5%) of surfactant (CTAB), pH (3-10), and temperature (20-50 oC) on the surface tension of synthesized nanobiocomposites was investigated to optimize operating parameters. Thus, the values of critical micelle concentration were determined for each the mass fraction (2%, 5%, and 10%) of eggshell.