COSTA, R. G. F.

MATTOSO, L. H. C.

RIBEIRO, C.

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Preparation of poly(vinyl alcohol)/titanium dioxide nanocomposite produced by electrospinning.  R. G. F. Costa1,2, C. Ribeiro1,2 and L. H. C. Mattoso1,2  1D Q, Programa de Pós-Graduação em Química, UFSCar, São Carlos, SP, Brazil  2 Laboratório Nacional de Nanotecnologia Aplicada ao Agronegócio Embrapa Instrumentação Agropecuária, São Carlos, SP, Brazil   Composites of organic-inorganic hybrids, poly(vinyl alcohol)/ titanium dioxide anatase, were prepared by electrospinning. Electrospinning is a simple and low-cost method for making polymer fibers with nanometric diameters. Some variables influence in producing the fibers, such as polymer concentration, applied voltage, injection rate and tip-to-collector distance (TCD). The research aimed to demonstrate that it is possible to prepare composite in the form fibers of the basis of PVA loaded with nanoparticles of  TiO2 anatase. Samples were prepared using 8.0 KV and injection rate of 0.7 mL/h, varying the concentration of TiO2 and maintaining the concentration of PVA constant. The morphologies of the films were studied by electronic scanning microscopy (SEM). The results showed that most fibers have diameters between 150 and 700 nm.                                                                  SEM micrograph of the as-spun PVA-TiO2 nanofiber                                                                                           (8.0 KV and 0.7 mL/h).  Keywords: electrospinning, nanocomposite, Poly(vinyl alcohol), titanium dioxide, nanofibers.    Work supported by CAPES, CNPq and FAPESP.    [1] A. Koski, K. Yim, S. Shivkumar, Mat. Lett. 58, 493 (2004). [2] H. Wu, J. Fan, X. Qin, G. Zhang, Mat. Lett. 62, 828 (2008).  guerreiro_rodrigo@yahoo.com.br, Embrapa Instrumentação Agropecuária, Rua XV de Novembro 1452, São Carlos, SP- Brazil, CEP: 13560-970 Phone: (16)2107-2800   

Preparation of poly(vinyl alcohol)/ titanium dioxide nanocomposite produced by electrospinning.

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http://www.alice.cnptia.embrapa.br/alice/bitstream/doc/26809/1/Proci08.00087.PDF

Preparation of poly(vinyl alcohol)/ titanium dioxide nanocomposite produced by electrospinning.

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