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Pengaruh Konsentrasi Ca2+ dan (PO4)3- pada Pembentukan Hidroksiapatit di dalam Matriks Selulosa Bakterial

Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia

Published: 1 Dec 2006.
Open Access Copyright 2006 Jurnal Kimia Sains dan Aplikasi under http://creativecommons.org/licenses/by-sa/4.0/.

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Abstract
Pembentukan hidroksiapatit Ca10(PO4)6(OH)2 dalam matriks selulosa bakterial dilakukan dengan cara merendam selulosa bakterial dalam larutan CaCl2 selama 18 jam, dilanjutkan dengan merendam dalam larutan KH2PO4 selama 18 jam pada pH 9. Perendaman tersebut dilakukan dengan berbagai variasi konsentrasi Ca2+ dan PO42-. Kadar kalsium yang terdeposit dalam selulosa bakterial dianalisis dengan AAS. Kadar fosfat dianalisis dengan Stannous Chloride methode dan untuk mengetahui apakah kalsium fosfat yang terdeposit membentuk struktur hidroksiapatit, dilakukan analisis dengan difraksi sinar X. Difraktogram sinar X menunjukkan telah terbentuk struktur hidroksiapatit dalam matriks selulosa bakterial dan rasio ideal C/P hidroksiapatit sebesar 1,676 terjadi pada perbandingan Ca2+: PO43- = 125 : 25.
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Keywords: hidroksiapatit; selulosa bakterial

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