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Journal of Applied Sciences
  Year: 2008 | Volume: 8 | Issue: 12 | Page No.: 2258-2264
DOI: 10.3923/jas.2008.2258.2264
 
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Preparation and Characterization of Nanocomposite and Nanoporous Silk Fibroin Films

Yaowalak Srisuwan, Mangkorn Srisa-ard, Chaiyasit Sittiwet, Yodthong Baimark, Nual- Anong Narkkong and Chirapha Butiman

Abstract:
Nanocomposite and nanoporous silk fibroin (SF) films were prepared by film casting of SF solution containing surfactant-free colloidal nanoparticles of methoxy poly (ethylene glycol)-b-poly (D, L-lactide) diblock copolymer (MPEG-b-PDLL). Self-condensation and nanophase separation of the nanoparticles from SF film matrix during film drying process gave nanopore structures. The colloidal nanoparticles were prepared in SF solution by modified-spontaneous emulsification solvent diffusion method without any surfactant. The interaction between SF and MPEG-b-PDLL in nanocomposite films was studied by Fourier transform infrared spectroscopy and thermogravimetry. The film transparency of SF nanocomposite films decreased as increasing the MPEG-b-PDLL ratio. Scanning Electron Microscopy (SEM) results indicated that the nanoparticle sizes in the films were in the range of 50-200 nm with spherical shape. Nanopore structures with pore size of less than 150 nm can be observed from SEM images of the film surface and cross-section. The nanopores are interconnected throughout the nanocomposite films. The number and size of nanoparticles and nanopores increased when the MPEG-b-PDLL ratio was increased.
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How to cite this article:

Yaowalak Srisuwan, Mangkorn Srisa-ard, Chaiyasit Sittiwet, Yodthong Baimark, Nual- Anong Narkkong and Chirapha Butiman, 2008. Preparation and Characterization of Nanocomposite and Nanoporous Silk Fibroin Films. Journal of Applied Sciences, 8: 2258-2264.

DOI: 10.3923/jas.2008.2258.2264

URL: https://scialert.net/abstract/?doi=jas.2008.2258.2264

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