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Pore size control in the synthesis of hydroxyapatite nanoparticles: The effect of pore expander content and the synthesis temperature
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| 【文章作者】Bakhtiari, Leila;Javadpour, Jafar;Rezaie, Hamid Reza;Erfan, Mohammad;Mazinani, Babak;Aminian, Alieh |
| 【文章摘要】 Porous hydroxyapatite particles were synthesized by a self-assembly method. The process was carried out under a basic pH condition using cetyltrimethylammonium bromide (CTAB) as cationic surfactant and 1-dodecanethiol (RSH) as micelle size expander. The focus of the present work was to investigate the effect of synthesis temperature and pore expander content on the dissociation degree of 1-dodecanethiol and the degree of swelling in the micelle structure. Swelling was related to the electrostatic interaction between the dissociated 1-dodecanethiol molecule (RS) and the cationic molecules of CTAB (CTA(+)). The synthesized samples were characterized by low-angle X-ray diffraction (LA-XRD), N-2 adsorption desorption experiments, X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM). The results indicated that pore expander content as well as the synthesis temperature played a significant role in the swelling of the micelle structure. There was a decrease in particle length/diameter ratio with the increase in the synthesis temperature and pore expander concentration. Nanoparticles with pore size in range of 23-40 nm were obtained in this study. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
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【卷】42 【ISSUE】9 【ISSUEID】815C0073
【文章期份】2016
【发布日期】2016/8/11 17:04:15
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