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OTS-modified HA and its toughening effect on PLLA/HA porous composite

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Abstract

In this paper, hydroxyapatite (HA) particles was modified with long-chain organic silane-Octadecyltrichlorosilane (OTS), and the modified particles were further used for preparing Poly(l-lactic acid) PLLA/HA porous composite. The modified particles were characterized by means of XRD, FTIR, and XPS techniques. Both XPS and FTIR results showed that OTS had been combined with HA, and the formation of P–O–Si bond, a covalent bond, on the HA particle surface was confirmed by XPS. OTS-modified HA particles were used to prepare porous composites by thermally induced phase separation method. The results showed that the composite had an interconnected pore structure with 100–300 μm macropores. With OTS dosage increasing during modification, the mechanical properties of PLLA/OTS-modified HA porous composites increased obviously. These results showed that OTS modification can effectively improve the interface compatibility between HA surface and PLLA.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, People’s Republic of China

    Chunli Yang, Kui Cheng & Wenjian Weng

  2. College of Food Science and Engineering, Harbin University of Commerce, Harbin, Heilongjiang, 150076, People’s Republic of China

    Chunyu Yang

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  1. Chunli Yang
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  2. Kui Cheng
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  3. Wenjian Weng
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Correspondence to Chunli Yang.

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Yang, C., Cheng, K., Weng, W. et al. OTS-modified HA and its toughening effect on PLLA/HA porous composite. J Mater Sci: Mater Med 20, 667–672 (2009). https://doi.org/10.1007/s10856-008-3604-1

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  • DOI: https://doi.org/10.1007/s10856-008-3604-1

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