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The study of tri-phasic interactions in nano-hydroxyapatite/konjac glucomannan/chitosan composite

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Abstract

The interactions among the three phases of nano-hydroxyapatite (n-HA), Konjac glucomannan (KGM) and Chitosan (CS) in n-HA/KGM/CS composite were investigated using TEM, IR, XRD, XPS and TGA methods. The crystalline structure of n-HA was studied by means of Rietveld method. A series of structure parameters, such as, cell lattice parameters (a or c), bonding lengths and a numerical index of distortion for PO4 tetrahedron, were calculated by Newton–Raphson calculating method to characterize the crystalline structure of HA at atom level. The results showed that n-HA was mainly linked with KGM and CS by hydrogen bonding between OH−–PO 3−4 of n-HA and –C=O, –NH of KGM-CS copolymer, and there was a stable interface formed between the three phases in the composite. Besides, orientation of this hydrogen bonding resulted in the decrease of the relative crystallization degree of KGM-CS copolymer.

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Acknowledgements

The author is appreciated the financial support of National 973 Key Basic Research Program (No.: 2004CB720604), and is also grateful for FT-IR data provided by Ms. Zhu Xiaohong (Analytical and Testing Center, Sichuan University), XRD data by Mr. Chen Shitu (Analytical and Testing Center, Sichuan University), and TGA data provided by Ms. Yang Zheng (Analytical and Testing Center, Sichuan University).

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Authors and Affiliations

  1. Research Center for Nano-Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu, 610064, People’s Republic of China

    Zhou Gang, Li Yubao, Zhang Li, Li Hong, Wang Mingbo, Cheng Lin, Wang Yuanyuan, Wang Huanan & Shi Pujiang

  2. College of Chemistry, Sichuan University, Chengdu, 610064, People’s Republic of China

    Zhou Gang, Li Hong, Wang Mingbo & Cheng Lin

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  1. Zhou Gang
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  2. Li Yubao
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  3. Zhang Li
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  4. Li Hong
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  5. Wang Mingbo
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  6. Cheng Lin
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  7. Wang Yuanyuan
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  8. Wang Huanan
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  9. Shi Pujiang
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Correspondence to Li Yubao.

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Gang, Z., Yubao, L., Li, Z. et al. The study of tri-phasic interactions in nano-hydroxyapatite/konjac glucomannan/chitosan composite. J Mater Sci 42, 2591–2597 (2007). https://doi.org/10.1007/s10853-006-1337-4

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  • DOI: https://doi.org/10.1007/s10853-006-1337-4

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