Synthesis of calcium phosphate crystals with thin nacreous structure

Nacre-like structures have attracted great interest in recent years due to their outstanding toughness, stiffness and impact resistance. However, there is a challenge associated with engineering nacre-like calcium phosphate crystals. In this study, thin nacreous-like monetite sheets were synthesized in solutions guided by a surfactant. The influence of temperature, initial pH, Ca/P ratio, stirring time and the concentration of cetyltrimethylammonium bromide (CTAB) on the nacre-like structure has been studied. Findings showed that a nacre-like structure could only be formed at a high temperature (90 degrees C), high initial pH (11), sufficient stirring time (3 h), and under the presence of CTAB. A small-angle X-ray scattering experiment carried out at a synchrotron radiation facility showed that the distance between nanolayers was around 2.6 nm and TEM confirmed the fine sheet-like structure. The mechanism of the formation the nacre-like structure and its characterization were discussed.

Grandfield, KathrynMcMaster University(Swepub:uu)katgr445 (author)
Yu, ShunKTH (author)
Engqvist, HåkanUppsala universitet,Tillämpad materialvetenskap(Swepub:uu)hakaengq (author)
Xia, WeiUppsala universitet,Tillämpad materialvetenskap,Materials in Medcine(Swepub:uu)weixi400 (author)
Uppsala universitetTillämpad materialvetenskap (creator_code:org_t)

By the author/editor: Chen, Song; Grandfield, Kath ...; Yu, Shun; Engqvist, Håkan; Xia, Wei

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Bio Materials

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