Solvothermal synthesis of hydroxyapatite nanorods with assistance of green polymer

- HAp nanorods has been successfully prepared with assistance of green polymer derivative - SS.
- Stirring time and the concentration of SS affected crystals' structure and aspect ratio.
- Shape transformation of calcium phosphate is a key parameter in determining the final morphology of the particles.

Development of low cost, environmental friendly crystal growth modifying reagents that are effective to HAp's microstructure regulation is highly crucial. Herein, sodium lignin sulfonate (SS), a byproduct of the pulp process, was used for preparing HAp nanorods. Results showed that both stirring time of reaction solution and the concentration of SS affected crystals' structure and aspect ratio. The growth mechanism was discussed on the basis of the results. And we hope this new synthetic strategy will offer an attractive route for the design of functional HAp nano −/micro- materials with fine structure.