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Luluk Edahwati
Department of Chemical Engineering, Universitas Pembangunan Nasional "Veteran" Jawa Timur, Jl. Rungkut Madya, Gunung. Anyar, Surabaya, 60294
Engineering

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Effect of In Situ Gelatin Addition on Synthesis and Characteristics of Limestone Based Hydroxyapatite using Sol-Gel Method Luluk Edahwati; Nazila Alfi Rahmah; Mohammad Rafli Alif Wahyudi
TEKNIK Vol 46, No 3 (2025)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v46i3.67466

Abstract

Hydroxyapatite (HAp) is a major component of bone and tooth tissues used to repair and rebuild malfunctioning bone. Hydroxyapatite synthesis widely utilizes materials that have a high calcium content. In this study, limestone was used as an economical calcium precursor. Gelatin was added in situ during the sol-gel process to improve biomechanical properties such as porosity and reduce 5the particle size. The variables used during hydroxyapatite synthesis were gelatin concentrations of 30%, 40% and 50% with pH variations of 10, 11 and 12. The best yield was 30% gelatin concentration with pH 12. HAp products were characterized using Fourier Transform Infra-Red (FTIR) to confirm that there are core functional groups that compose hydroxyapatite, namely PO43-, CO(3)(2-)and OH-. SEM-EDX analysis revealed granular crystal morphology with particle dimensions below 600 nm and the highest porosity of 60.73% at pH 10. These results indicate that the in situ addition of gelatin during the sol-gel process successfully produced hydroxyapatite with biomechanical properties suitable for implant applications, especially in teeth, with optimal porosity and adequate particle size to support cell growth.
Co-Authors Mohammad Rafli Alif Wahyudi Nazila Alfi Rahmah