Sintesis dan Karakterisasi Fluorapatit Berbasis Cangkang Keong Emas dengan Metode Presipitasi dan Solid-State Reaction

Abstract

Pemasangan implan sebagai benda asing dalam tubuh sering kali mengalami reaksi penolakan oleh tubuh. Hal tersebut dapat dihindari melalui pelapisan implan dengan fluorapatit (FAp). Salah satu faktor keberhasilan sintesis FAp ditentukan oleh metode sintesis. Penelitian ini bertujuan menyintesis FAp dengan metode presipitasi (FAp-P) dan solid-state reaction (FAp-SS) berbahan dasar cangkang keong emas. Penelitian dilakukan melalui tiga tahap, yaitu preparasi sampel, sintesis FAp, dan karakterisasi FAp dengan X-ray diffraction (XRD), fourier transform infrared (FTIR), dan scanning electron microscope-energy dispersive X-ray (SEM-EDX). Hasil XRD menunjukkan kristalinitas yang baik untuk kedua metode. FAp-SS menghasilkan spektrum FTIR yang lebih mirip dengan spektrum FAp dibandingkan dengan FAp-P. Hasil SEM menunjukkan morfologi sampel FAp-SS lebih seragam dibandingkan FAp-P. Di samping itu, EDX mengonfirmasi rasio Ca/P dari FAp-P sebesar 1,84 dengan P/F 2,00 sedangkan rasio Ca/P dari FAp-SS sebesar 1,86 dengan P/F 2,94. Hasil tersebut mengonfirmasi metode solid-state reaction lebih mendekati standar FAp, yaitu Ca/P 1,67 dan P/F 3,00.

Implant placement as a foreign object in the body often experiences a rejection reaction by the body. It can be avoided through implant coating with fluorapatite (FAp). One factor that determines FAp's successful synthesis is the synthesis method. This study aims to synthesize FAp by precipitation method (FAp-P) and solid-state reaction (FAp-SS) made from golden snail shells. The research was conducted through three stages, which are sample preparation, FAp synthesis, and FAp characterization with X-ray diffraction (XRD), Fourier transform infrared (FTIR), and scanning electron microscope-energy dispersive X-ray (SEM-EDX). XRD results showed good crystallinity for both methods. FAp-SS produced an FTIR spectrum that was more similar to the FAp spectrum compared to FAp-P. SEM results showed that the morphology of FAp-SS was more uniform than FAp-P. In addition, EDX confirmed that the Ca/P ratio of FAp-P was 1.84 with a P/F of 2.00, while the Ca/P ratio of FAp-SS was 1.86 with a P/F of 2.94. These results confirm that the solid-state reaction method is closer to the FAp standard, namely Ca/P 1.67 and P/F 3.00.