Int. J. Mol. Sci. 2011, 12(6), 3821-3830; doi:10.3390/ijms12063821
Article

Synthesis of Brushite Particles in Reverse Microemulsions of the Biosurfactant Surfactin

Received: 16 April 2011; in revised form: 10 May 2011 / Accepted: 2 June 2011 / Published: 9 June 2011
(This article belongs to the Section Material Sciences and Nanotechnology)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In this study the “green chemistry” use of the biosurfactant surfactin for the synthesis of calcium phosphate using the reverse microemulsion technique was demonstrated. Calcium phosphates are bioactive materials that are a major constituent of human teeth and bone tissue. A reverse microemulsion technique with surfactin was used to produce nanocrystalline brushite particles. Structural diversity (analyzed by SEM and TEM) resulted from different water to surfactin ratios (W/S; 250, 500, 1000 and 40,000). The particle sizes were found to be in the 16–200 nm range. Morphological variety was observed in the as-synthesized microemulsions, which consisted of nanospheres (~16 nm in diameter) and needle-like (8–14 nm in diameter and 80–100 nm in length) noncalcinated particles. However, the calcinated products included nanospheres (50–200 nm in diameter), oval (~300 nm in diameter) and nanorod (200–400 nm in length) particles. FTIR and XRD analysis confirmed the formation of brushite nanoparticles in the as-synthesized products, while calcium pyrophosphate was produced after calcination. These results indicate that the reverse microemulsion technique using surfactin is a green process suitable for the synthesis of nanoparticles.
Keywords: biosurfactant; reverse microemulsion; brushite; surfactin; nanoparticle
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MDPI and ACS Style

Maity, J.P.; Lin, T.-J.; Cheng, H.-H.; Chen, C.-Y.; Reddy, A.S.; Atla, S.B.; Chang, Y.-F.; Chen, H.-R.; Chen, C.-C. Synthesis of Brushite Particles in Reverse Microemulsions of the Biosurfactant Surfactin. Int. J. Mol. Sci. 2011, 12, 3821-3830.

AMA Style

Maity JP, Lin T-J, Cheng H-H, Chen C-Y, Reddy AS, Atla SB, Chang Y-F, Chen H-R, Chen C-C. Synthesis of Brushite Particles in Reverse Microemulsions of the Biosurfactant Surfactin. International Journal of Molecular Sciences. 2011; 12(6):3821-3830.

Chicago/Turabian Style

Maity, Jyoti Prakash; Lin, Tz-Jiun; Cheng, Henry Pai-Heng; Chen, Chien-Yen; Reddy, A. Satyanarayana; Atla, Shashi B.; Chang, Young-Fo; Chen, Hau-Ren; Chen, Chien-Cheng. 2011. "Synthesis of Brushite Particles in Reverse Microemulsions of the Biosurfactant Surfactin." Int. J. Mol. Sci. 12, no. 6: 3821-3830.

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