Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution

In this study, the effect of hydrolysis on electrospinnability of chitosan/PVA blend solution has been investigated. Since crude chitosan (Mw=8.96105 g/mole, DD=40%) could not be dissolved even in concentrated acetic acid, it was hydrolyzed with 33.5 wt. % of NaOH at 90°C for 24 and 42 h. Hydrolyzed...

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Main Authors:	Umma Habiba, Amalina M. Afifi, Bee, Chin Ang, Sepehr Talebian
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2016
Online Access:	http://journalarticle.ukm.my/9566/ http://journalarticle.ukm.my/9566/ http://journalarticle.ukm.my/9566/1/04_Umma_Habiba.pdf

id	ukm-9566
recordtype	eprints
spelling	ukm-95662016-12-14T06:50:19Z http://journalarticle.ukm.my/9566/ Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution Umma Habiba, Amalina M. Afifi, Bee, Chin Ang Sepehr Talebian, In this study, the effect of hydrolysis on electrospinnability of chitosan/PVA blend solution has been investigated. Since crude chitosan (Mw=8.96105 g/mole, DD=40%) could not be dissolved even in concentrated acetic acid, it was hydrolyzed with 33.5 wt. % of NaOH at 90°C for 24 and 42 h. Hydrolyzed chitosan with two different time duration was analyzed using Fourier transform infrared (FTIR). Morphology of the product nanofiber was investigated by field emission scanning electron microscope (FESEM.). FTIR results showed that the hydrolysis did not destroy the molecular backbone of chitosan but increased the degree of deacetylation from 40 to 84% and 92% for 24 and 42 h hydrolysis time, respectively. FESEM image analysis was carried out and histogram was drawn to study on the distribution of fiber diameter. It showed that though the composition of chitosan/PVA remained the same, but mean fiber diameter, standard deviation and required applied voltage for electrospinning was smaller for the solution containing maximum time hydrolyzed chitosan. It indicated that longer hydrolysis time resulted in finer nanofiber which mostly attributed to lower required voltage for electrospinning. Threshold composition for defect free fiber is 50:50 and 60:40 of chitosan/PVA for 24 and 42 h hydrolysis, respectively. It meant that 42 h hydrolysis ensured the presence of more chitosan in the chitosan/PVA polymer blend because of smaller presence of amino group in chitosan molecule. Universiti Kebangsaan Malaysia 2016-01 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9566/1/04_Umma_Habiba.pdf Umma Habiba, and Amalina M. Afifi, and Bee, Chin Ang and Sepehr Talebian, (2016) Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution. Sains Malaysiana, 45 (1). pp. 29-34. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid45bil1_2016/KandunganJilid45Bil1_2016.htm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	In this study, the effect of hydrolysis on electrospinnability of chitosan/PVA blend solution has been investigated. Since crude chitosan (Mw=8.96105 g/mole, DD=40%) could not be dissolved even in concentrated acetic acid, it was hydrolyzed with 33.5 wt. % of NaOH at 90°C for 24 and 42 h. Hydrolyzed chitosan with two different time duration was analyzed using Fourier transform infrared (FTIR). Morphology of the product nanofiber was investigated by field emission scanning electron microscope (FESEM.). FTIR results showed that the hydrolysis did not destroy the molecular backbone of chitosan but increased the degree of deacetylation from 40 to 84% and 92% for 24 and 42 h hydrolysis time, respectively. FESEM image analysis was carried out and histogram was drawn to study on the distribution of fiber diameter. It showed that though the composition of chitosan/PVA remained the same, but mean fiber diameter, standard deviation and required applied voltage for electrospinning was smaller for the solution containing maximum time hydrolyzed chitosan. It indicated that longer hydrolysis time resulted in finer nanofiber which mostly attributed to lower required voltage for electrospinning. Threshold composition for defect free fiber is 50:50 and 60:40 of chitosan/PVA for 24 and 42 h hydrolysis, respectively. It meant that 42 h hydrolysis ensured the presence of more chitosan in the chitosan/PVA polymer blend because of smaller presence of amino group in chitosan molecule.
format	Article
author	Umma Habiba, Amalina M. Afifi, Bee, Chin Ang Sepehr Talebian,
spellingShingle	Umma Habiba, Amalina M. Afifi, Bee, Chin Ang Sepehr Talebian, Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
author_facet	Umma Habiba, Amalina M. Afifi, Bee, Chin Ang Sepehr Talebian,
author_sort	Umma Habiba,
title	Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
title_short	Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
title_full	Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
title_fullStr	Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
title_full_unstemmed	Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
title_sort	influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution
publisher	Universiti Kebangsaan Malaysia
publishDate	2016
url	http://journalarticle.ukm.my/9566/ http://journalarticle.ukm.my/9566/ http://journalarticle.ukm.my/9566/1/04_Umma_Habiba.pdf
first_indexed	2023-09-18T19:55:15Z
last_indexed	2023-09-18T19:55:15Z
_version_	1777406486043951104

Influence of hydrolysis on electrospinnability of chitosan/polyvinyl alcohol blends solution and fiber diameter distribution

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