Morphological and mechanical response characterization of nanofiber aggregates of pva produced by electrospinning sol-gel process

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.

• Autores: Franco Medina, Edgar; Delvasco Arjona, Silvio; Zuluaga Corrales, Fabio; Amigó Borras, Vicente
• Tipo de recurso: Article of journal
• Fecha de publicación: 2013
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/40443
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/40443; http://bdigital.unal.edu.co/30540/; http://bdigital.unal.edu.co/30540/3/3432; http://bdigital.unal.edu.co/30540/5/4499
• Palabra clave: Electrospinning; poly (Vinyl Alcohol); nanofiber aggregate; electrospinning/sol-gel process
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional