Biomimetic mineralization of rod-like cellulose nano-whiskers and spectrum analysis

• Published in: Guang pu xue yu guang pu fen xi Vol. 32; no. 5; p. 1418
• Main Authors: Qu, Ping, Wang, Xuan, Cui, Xiao-xia, Zhang, Li-ping
• Format: Journal Article
• Language: Chinese
• Published: China 01.05.2012
• Subjects: Biomimetics; Cellulose - chemistry; Durapatite - chemistry; Nanostructures; Photoelectron Spectroscopy; X-Ray Diffraction
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2012)05-1418-05

Cellulose nano-whiskers/nano-hydroxyapatite composite was prepared with biomimetic mineralization using rod-like cellulose nano-whiskers as template. The cellulose nano-whiskers and cellulose nano-whiskers/nano-hydroxyapatite composite were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope-energy dispersive analysis of X-rays (SEM-EDXA). Variation and distribution of carbon, oxygen, calcium, and phosphorus in the composites were studied. The morphologies and growth mechanism of nano-hydroxyapatite were analyzed. The results showed that nano-hydroxyapatite was formed on the surface of cellulose nano-whiskers; the carbon-oxygen ratio of cellulose nano-whiskers and cellulose nano-whiskers/nano-hydroxyapatite composite was 1.81 and 1.54, respectively; the calcium-phosphorus ratio of the composite was 1.70. The nucleation of nano-hydroxyapatite was around the hydroxyl groups of cellulose nano-whiskers. It is suggested that there is coordination betwee