Publicado

2013-03-01

MORPHOLOGICAL AND MECHANICAL RESPONSE CHARACTERIZATION OF NANOFIBER AGGREGATES OF PVA PRODUCED BY ELECTROSPINNING SOL-GEL PROCESS

Palabras clave:

Electrospinning, poly (Vinyl Alcohol), nanofiber aggregate, electrospinning/sol-gel process (es)

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Autores/as

  • EDGAR FRANCO MEDINA
  • SILVIO DELVASTO ARJONA
  • FABIO ZULUAGA CORRALES
  • VICENTE AMIGÓ BORRAS
This work deals with the preparation of poly (vinyl alcohol) solutions composed of a surface active agent, an acid and water. With this solution firstly electrospun nanofiber mats and then nanofiber aggregates were obtained by electrospinning/sol-gel process. The samples were morphologically characterized using scanning electron microscopy (SEM) and Atomic Force Microscopy (AFM), obtaining superficial roughness values, distribution and average diameter before and after the electrospinning/sol-gel process. The PVA nanofiber aggregate reached a maximum strength and a modulus of 90 MPa and 2.55 GPa, respectively. Experimental results show that these fibers have a potential use as secondary reinforcement materials in cementitious composites.

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