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Access type: UnknownAuthor: search.filters.author.Jongwuttanaruk, Kaona

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    Gelatin/Na2Ti3O7 Nanocomposite Scaffolds: Mechanical Properties and Characterization for Tissue Engineering Applications
    (2023-05-01)
    Sangkatip, Rittichai
    ;
    Jongwuttanaruk, Kaona
    ;
    Sriseubsai, Wipoo
    Materials and manufacturing technologies are necessary for tissue engineering and developing temporary artificial extracellular matrices. In this study, scaffolds were fabricated from freshly synthesized titanate (Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf>) and its precursor titanium dioxide and their properties were investigated. The scaffolds with improved properties were then mixed with gelatin to form a scaffold material using the freeze-drying technique. To determine the optimal composition for the compression test of the nanocomposite scaffold, a mixture design with three factors of gelatin, titanate, and deionized water was used. Then, the scaffold microstructures were examined by scanning electron microscopy (SEM) to determine the porosity of the nanocomposite scaffolds. The scaffolds were fabricated as a nanocomposite and determined their compressive modulus values. The results showed that the porosity of the gelatin/Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf> nanocomposite scaffolds ranged from 67% to 85%. When the mixing ratio was 100:0, the degree of swelling was 22.98%. The highest swelling ratio of 85.43% was obtained when the freeze-drying technique was applied to the mixture of gelatin and Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf> with a mixing ratio of 80:20. The specimens formed (gelatin:titanate = 80:20) exhibited a compressive modulus of 30.57 kPa. The sample with a composition of 15.10% gelatin, 2% Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf>, and 82.9% DI water, processed by the mixture design technique, showed the highest yield of 30.57 kPa in the compression test.
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    Optimization of Salt-Leaching Parameters for Gelatin/Na2Ti3O7 Scaffolds Using a Mixture Design Experiment
    (2022-02-01)
    Sangkatip, Rittichai
    ;
    Sriseubsai, Wipoo
    ;
    Kiatkittipong, Kunlanan
    ;
    Jongwuttanaruk, Kaona
    The purpose of this research was to learn the formation of biomedical scaffold material from gelatin by using titanate (Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf>), which is a newly synthesized derivative of titanium dioxide (TiO<inf>2</inf> ) with gelatin. It was prepared by mixed several solutions and cross-linked molecules by heating and salt-leaching. The biomedical scaffold was formed, and its porosity depended on the size of the salt crystal. The mixture was designed by using a mixture design with three factors: gelatin, titanate, and deionized water to determine the optimal mixture for the tensile strength of the biomedical scaffold. The microstructure of the biomedical scaffold was studied using scanning electron microscopy (SEM). The findings revealed that Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf> thoroughly pen-extracted the biomedical scaffold, and the tensile strength of the gelatin/titanate scaffold was higher than the biomedical scaffold, which was formed using pure gelatin. By using the mixture design technique, the 14.73% gelatin, 0.2% Na<inf>2</inf>Ti<inf>3</inf>O<inf>7</inf>, and 85.07% DI water got the highest yield of tensile strength (1508.15 kP). This was an about 4.88% increase in the tensile strength property when compared with using TiO<inf>2</inf> .
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