Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats
Novel poly(vinyl alcohol) (PVA) nanofiber mats were prepared for the first time through heterogeneous saponification of electrospun poly(vinyl acetate) (PVAc) nanofibers. The effect of varying the saponification conditions, including temperature, time, and concentration of the alkaline solution, on...
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2016-10-01
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doaj-8a822d8b28634ea0932603ef35d906e22020-11-24T22:51:21ZengMDPI AGPolymers2073-43602016-10-0181037610.3390/polym8100376polym8100376Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber MatsSeong Baek Yang0Jong Won Kim1Jeong Hyun Yeum2Department of Bio-fibers and Materials Science, Kyungpook National University, Daegu 41566, KoreaDepartment of Textile Engineering & Technology, Yeungnam University, Gyeongsan 38541, KoreaDepartment of Bio-fibers and Materials Science, Kyungpook National University, Daegu 41566, KoreaNovel poly(vinyl alcohol) (PVA) nanofiber mats were prepared for the first time through heterogeneous saponification of electrospun poly(vinyl acetate) (PVAc) nanofibers. The effect of varying the saponification conditions, including temperature, time, and concentration of the alkaline solution, on the morphology of the saponified PVA fibers were evaluated by field-emission scanning electron microscopy. At 25 °C, the saponified PVA fibers exhibited a broad diameter distribution. The average fiber diameter, however, was found to decrease with increasing saponification temperature. When the saponification time was increased from 6 to 30 h, the average fiber diameter decreased gradually from 1540 to 1060 nm. In addition, the fiber diameter and morphology were also affected by the concentration of the alkaline saponification solution. The most optimal conditions for fabrication of thin, uniform, and smooth PVA nanofibers corresponded to an alkaline solution containing 10 g each of NaOH, Na2SO4, and methanol per 100 g of water, a temperature of 25 °C, and a saponification time of 24 h.http://www.mdpi.com/2073-4360/8/10/376electrospinningheterogeneous saponificationpoly(vinyl alcohol)poly(vinyl acetate)nanofiber mats |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Seong Baek Yang Jong Won Kim Jeong Hyun Yeum |
spellingShingle |
Seong Baek Yang Jong Won Kim Jeong Hyun Yeum Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats Polymers electrospinning heterogeneous saponification poly(vinyl alcohol) poly(vinyl acetate) nanofiber mats |
author_facet |
Seong Baek Yang Jong Won Kim Jeong Hyun Yeum |
author_sort |
Seong Baek Yang |
title |
Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats |
title_short |
Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats |
title_full |
Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats |
title_fullStr |
Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats |
title_full_unstemmed |
Effect of Saponification Condition on the Morphology and Diameter of the Electrospun Poly(vinyl acetate) Nanofibers for the Fabrication of Poly(vinyl alcohol) Nanofiber Mats |
title_sort |
effect of saponification condition on the morphology and diameter of the electrospun poly(vinyl acetate) nanofibers for the fabrication of poly(vinyl alcohol) nanofiber mats |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2016-10-01 |
description |
Novel poly(vinyl alcohol) (PVA) nanofiber mats were prepared for the first time through heterogeneous saponification of electrospun poly(vinyl acetate) (PVAc) nanofibers. The effect of varying the saponification conditions, including temperature, time, and concentration of the alkaline solution, on the morphology of the saponified PVA fibers were evaluated by field-emission scanning electron microscopy. At 25 °C, the saponified PVA fibers exhibited a broad diameter distribution. The average fiber diameter, however, was found to decrease with increasing saponification temperature. When the saponification time was increased from 6 to 30 h, the average fiber diameter decreased gradually from 1540 to 1060 nm. In addition, the fiber diameter and morphology were also affected by the concentration of the alkaline saponification solution. The most optimal conditions for fabrication of thin, uniform, and smooth PVA nanofibers corresponded to an alkaline solution containing 10 g each of NaOH, Na2SO4, and methanol per 100 g of water, a temperature of 25 °C, and a saponification time of 24 h. |
topic |
electrospinning heterogeneous saponification poly(vinyl alcohol) poly(vinyl acetate) nanofiber mats |
url |
http://www.mdpi.com/2073-4360/8/10/376 |
work_keys_str_mv |
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