Resumo

COLIN-OROZCO, J.; ZAPATA-TORRES, M; PEDROZA-ISLAS, R.  e  RODRIGUEZ-GATTORNO, G.. Crecimiento y caracterización de nanofibras obtenidas a partir de proteína aislada de suero lácteo y oxido de polietileno por la técnica de electrohilado. Superf. vacío [online]. 2013, vol.26, n.2, pp.31-35. ISSN 1665-3521.

In this work were obtained nanofibers of whey protein isolated (WPI) and polyethylene oxide (PEO) using the electrospinning technique. For the preparation of the fibers we started of dispersions of both materials by varying the proportion of PEOxWPI100-x, in the range of 0≤x≤100. The nanofibers obtained were characterized by scanning electron microscopy, X-ray diffraction and theermogravimetric analysis. For values of x between 100% and 40% of PEO content, The fibers growth with diameters average around the 230 ± 80 nm, whereas the dispersions with high content of WPI promote the formation of morphologies type "pearls". The crystallinity of the nanofibers increased with the increases of PEO concentration in the solution. The nanofibers obtained the combinations of PEO60WPI40 y PEO50WPI50were more thermally stable.

Palavras-chave : Nanofibers; Electrospinning; Polyethylene oxide; isolated whey protein.