Novel hydroxyapatite nanorods crystal growth in silk fibroin/sodium alginate nanofiber hydrogel

作者：Ming Jinfa^*; Bie Shiyu; Jiang Zhijuan; Wang Peng; Zuo Baoqi

来源：Materials Letters, 2014, 126: 169-173.

DOI：10.1016/j.matlet.2014.04.025

• Crystal growth
• Composite materials
• Hydrogel
• Hydroxyapatite

Silk fibroin/sodium alginate (SF/SA) nanofiber hydrogels were used as organic template to control hydroxyatiatite (HAP) crystal growth at room temperature. Scanning electron microscopy demonstrated rectangular column and size-controllable HAp nanorods formed, and the crystalline structure of nanorods crystals was confirmed by energy dispersive X-ray spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. Time-dependent experimental results also exhibited HAp nanorods with rectangular column growth in the mineralization process. SF/SA nanofiber hydrogels had an important impact on the morphology of crystals due to the strong electrostatic interaction between hybrid molecular and Ca2+ ions. The regulating formation mechanism of HAp nanorods by SF/SA nanofiber hydrogels may extend the understanding of the potential for using biomimetic principles to synthesize bone-like composite materials.

• 出版日期2014-7-1
• 单位苏州大学