Biomimetic synthesis of needle-like nano-hydroxyapatite templated by double-hydrophilic block copolymer |
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| Authors: | Xiang Yao Hongwei Yao Guoying Li Yuanting Li |
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| Affiliation: | (1) Department of Chemical Engineering, Tsinghua University, 100084 Beijing, People’s Republic of China;(2) Department of Polymer Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China; |
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| Abstract: | Double-hydrophilic block copolymer (DHBC) poly-(vinylpyrrolidone)-b-poly(vinylpyrrolidone-alt-maleic anhydride)-b-poly-(vinylpyrrolidone) (PVP-b-P(NVP-alt-MAn)-b-PVP) was synthesised as the biomimetic template for the hydroxyapatite (HAP) nanocrystal synthesis. Needle-like HAP nanocrystals can be formed in the presence of PVP108-P(NVP-MAn)28-PVP108. Comparing to the HAP nanocrystals formed in the presence of poly-(vinylpyrrolidone) (PVP) homopolymer, the HAP nanocrystal formed with DHBC is more stable and never precipitate in water after preparation. The crystallization process and the morphology of the final nano-HAP crystal can be controlled by adjusting DHBC molecular structure. |
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