Paper Title:
Preparation and Characterization of Surface-Modified β-Tricalcium Phosphate/Ploy(L-Lactide) Biocomposites
  Abstract

A new surface modification method by modifying low molecular weight ploy (L-lactide) (LMW PLLA) onto the β-tricalcium phosphate (β-TCP) superfine particles has been developed. The surface-modified β-TCP is characterized by FT-IR, XRD, digital microscope and contact angle measurement, et al. FT-IR spectra confirmed that LMW PLLA was connected onto the β-TCP surface through ionic interaction. XRD results indicated that the LMW PLLA did not affect the crystalline form of β-TCP, but the XRD patterns of the p-β-TCP showed a little difference with β-TCP. The p-β-TCP particles could be dispersed uniformly in dichloromethane. In contrast, unmodified β-TCP particles are apt to agglomerate after dispersed into dichloromethane. Wet angle measurement showed that hydrolyzed LMW PLLA significantly improves hydrophobicity of modified β-TCP particles. For the preparation of composites, PLLA was mixed with β-TCP and p-β-TCP, respectively, in a ratio of 85/15 (w/w) and moulded into tensile test specimens. Tensile tests showed that mechanical properties were improved, scanning electron microscopy (SEM) exhibited that modified β-TCP is an effective approach to prepare a homogeneous composites, moreover, it indicated a better interfacial phase interaction in the composite with the p-β-TCP. Chemical bonds between filler and PLLA matrix are assumed to be formed by ionic interaction.

  Info
Periodical
Advanced Materials Research (Volumes 197-198)
Edited by
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
Pages
120-126
DOI
10.4028/www.scientific.net/AMR.197-198.120
Citation
J. Zou, X. B. Jiang, J. Zhang, Y. Shu, X. Chen, F. R. Huang, "Preparation and Characterization of Surface-Modified β-Tricalcium Phosphate/Ploy(L-Lactide) Biocomposites", Advanced Materials Research, Vols. 197-198, pp. 120-126, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Fukue Nagata, Tatsuya Miyajima, Kay Teraoka, Yoshiyuki Yokogawa
Abstract:Porous biodegradable microspheres were successfully obtained by an improvement single step and surfactant-free emulsion solvent evaporation...
819
Authors: Fukue Nagata, Kay Teraoka, Yoshiyuki Yokogawa, Tatsuya Miyajima
915
Authors: Zhi Ming Zhang, Shi Qian Wei, Li Hua Han
Materials Chemistry
Abstract:With L-glutamic acid as raw materials, N-carboxy-L-glutamic acid-benzyl-anhydride (BLG-NCA) was synthesized by triphosgene. With aniline as...
2110
Authors: Sai Zhang, Guo Jun Jiang
Chapter 4: Micro / Nano Materials and NanoTechnologies
Abstract:In this paper, we presented a novel system of electrospinning to directly prepare fibrous meshes with micro/nanoparticles. Acetate cellulose...
475