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Int. J. Mol. Sci. 2018, 19(6), 1718; https://doi.org/10.3390/ijms19061718

Morphological Study of Chitosan/Poly (Vinyl Alcohol) Nanofibers Prepared by Electrospinning, Collected on Reticulated Vitreous Carbon

1
Tecnológico Nacional de México/Instituto Tecnológico de Cd. Madero, Centro de Investigación en Petroquímica, Prol. Bahía de Aldhair y Av. De las Bahías, Parque de la Pequeña y Mediana Industria, Altamira, Tamaulipas 89600, Mexico
2
Instituto Mexicano del Petróleo, Gerencia de Transformación de Hidrocarburos, Eje Central Lázaro Cárdenas No. 152, Col. San Bartolo Atepehuacán, 07730 Ciudad de México, Mexico
3
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Circuito de la Investigación Científica, Ciudad Universitaria, 04510 Ciudad de México, Mexico
*
Author to whom correspondence should be addressed.
Received: 3 May 2018 / Revised: 30 May 2018 / Accepted: 1 June 2018 / Published: 9 June 2018
(This article belongs to the Special Issue Synthesis and Applications of Biopolymer Composites)
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Abstract

In this work, chitosan (CS)/poly (vinyl alcohol) (PVA) nanofibers were prepared by using the electrospinning method. Different CS concentrations (0.5, 1, 2, and 3 wt %), maintaining the PVA concentration at 8 wt %, were tested. Likewise, the studied electrospinning experimental parameters were: syringe/collector distance, solution flow and voltage. Subsequently, the electrospun fibers were collected on a reticulated vitreous carbon (RVC) support for 0.25, 0.5, 1, 1.5, and 2 h. The morphology and diameter of the CS/PVA nanofibers were characterized by scanning electron microscopy (SEM), finding diameters in the order of 132 and 212 nm; the best results (uniform fibers) were obtained from the solution with 2 wt % of chitosan and a voltage, distance, and flow rate of 16 kV, 20 cm, and 0.13 mL/h, respectively. Afterwards, a treatment with an ethanolic NaOH solution was performed, observing a change in the fiber morphology and a diameter decrease (117 ± 9 nm). View Full-Text
Keywords: chitosan; PVA; nanofibers; electrospinning chitosan; PVA; nanofibers; electrospinning
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Sanchez-Alvarado, D.I.; Guzmán-Pantoja, J.; Páramo-García, U.; Maciel-Cerda, A.; Martínez-Orozco, R.D.; Vera-Graziano, R. Morphological Study of Chitosan/Poly (Vinyl Alcohol) Nanofibers Prepared by Electrospinning, Collected on Reticulated Vitreous Carbon. Int. J. Mol. Sci. 2018, 19, 1718.

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