Irradiation time-dependent study of eggshell-derived hydroxyapatite powder synthesized by microwave-assisted wet chemical precipitation method

K.W. Goh; Y.H. Wong; R.S.K. Singh; Hari Chandran; S.K. Wong; K.Y. Sara Lee

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자료유형: 학술저널

저자정보: K.W. Goh (University of Malaya) Y.H. Wong (University of Malaya) R.S.K. Singh (University of Malaya) Hari Chandran (University of Malaya) S.K. Wong (Universiti Kebangsaan Malaysia) K.Y. Sara Lee (Tunku Abdul Rahman University College)

저널정보: 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제23권 제2호

발행연도: 2022.4

수록면: 158 - 164 (7page)

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The extraction of calcium from natural biowaste material such as chicken eggshells have been shown to be viable to synthesiscalcium phosphate bioceramic. In this work, eggshell-derived hydroxyapatite powder was synthesised by using the wetchemical precipitation technique coupled with microwave irradiation at low power (700 W) at varying exposure time from 5to 30 min. The derived nano-powders were examined to determine the phases present, chemical bonding and microstructuralevolution. It was revealed that the irradiation time has an effect on the degree of crystallinity and both the crystallite andparticle size of the derived powders although the hydroxyapatite phase stability was not disrupted. An exposure time of 15 min. was determined to be sufficient when subjected to low power microwave irradiation to formed a well-defined needle-likehydroxyapatite particles having an average crystallite size of about 22 nm. On the contrary to many literatures, this study hasdemonstrated the viability of synthesizing a useful bioceramic from using biowaste eggshells coupled with microwaveirradiation at low power of 700 W for very short period of time to produce nano-range needle-like hydroxyapatite particlessuitable for biomedical application.

#Eggshells #Calcium phosphate #Bioceramic #Microwave-assisted synthesis #Hydroxyapatite

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