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Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method

Hydrogels were produced from cellulose derived from kenaf core powder with weight average molecular weight of cellulose was 1.68 × 105 and was dissolved in NaOH/urea solvent at -13oC. To obtain the optimal dissolving parameters, different percentage of NaOH, urea and kenaf core cellulose was used to...

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Main Authors: Hatika Kaco,, Sarani Zakaria,, Nur Fazlinda Razali,, Chin, Hua Chia, Lina Zhang, Zhang, Saad Mohamad Jani,
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2014
Online Access:http://journalarticle.ukm.my/7520/1/14_Hatika_Kaco.pdf
http://journalarticle.ukm.my/7520/
http://www.ukm.my/jsm
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spelling my-ukm.journal.75202016-12-14T06:44:21Z http://journalarticle.ukm.my/7520/ Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method Hatika Kaco, Sarani Zakaria, Nur Fazlinda Razali, Chin, Hua Chia Lina Zhang, Zhang Saad Mohamad Jani, Hydrogels were produced from cellulose derived from kenaf core powder with weight average molecular weight of cellulose was 1.68 × 105 and was dissolved in NaOH/urea solvent at -13oC. To obtain the optimal dissolving parameters, different percentage of NaOH, urea and kenaf core cellulose was used to study the degree of dissolution and formation of hydrogel. From the results obtained, it was found that the ratio of 6% NaOH/4% urea and 2% cellulose produced a good hydrogel. UV-Vis spectroscopy and XRD analysis were performed to analyze the transparency and crystallinity index of the cellulose solution and hydrogel, respectively. It showed that the hydrogel with the highest degree of solubility gave highest transparency due to the reduction of cellulose crystallinity as a result of the dissolution process. XRD analysis results showed the crystallinity of cellulose from kenaf core decreased by 70% after dissolution and hydrogel formation. Samples with 4% urea possess highest water content of 73% and decreased with increasing urea content. Universiti Kebangsaan Malaysia 2014-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7520/1/14_Hatika_Kaco.pdf Hatika Kaco, and Sarani Zakaria, and Nur Fazlinda Razali, and Chin, Hua Chia and Lina Zhang, Zhang and Saad Mohamad Jani, (2014) Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method. Sains Malaysiana, 43 (8). pp. 1221-1229. ISSN 0126-6039 http://www.ukm.my/jsm
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Hydrogels were produced from cellulose derived from kenaf core powder with weight average molecular weight of cellulose was 1.68 × 105 and was dissolved in NaOH/urea solvent at -13oC. To obtain the optimal dissolving parameters, different percentage of NaOH, urea and kenaf core cellulose was used to study the degree of dissolution and formation of hydrogel. From the results obtained, it was found that the ratio of 6% NaOH/4% urea and 2% cellulose produced a good hydrogel. UV-Vis spectroscopy and XRD analysis were performed to analyze the transparency and crystallinity index of the cellulose solution and hydrogel, respectively. It showed that the hydrogel with the highest degree of solubility gave highest transparency due to the reduction of cellulose crystallinity as a result of the dissolution process. XRD analysis results showed the crystallinity of cellulose from kenaf core decreased by 70% after dissolution and hydrogel formation. Samples with 4% urea possess highest water content of 73% and decreased with increasing urea content.
format Article
author Hatika Kaco,
Sarani Zakaria,
Nur Fazlinda Razali,
Chin, Hua Chia
Lina Zhang, Zhang
Saad Mohamad Jani,
spellingShingle Hatika Kaco,
Sarani Zakaria,
Nur Fazlinda Razali,
Chin, Hua Chia
Lina Zhang, Zhang
Saad Mohamad Jani,
Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
author_facet Hatika Kaco,
Sarani Zakaria,
Nur Fazlinda Razali,
Chin, Hua Chia
Lina Zhang, Zhang
Saad Mohamad Jani,
author_sort Hatika Kaco,
title Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
title_short Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
title_full Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
title_fullStr Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
title_full_unstemmed Properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
title_sort properties of cellulose hydrogel from kenaf core prepared via pre-cooled dissolving method
publisher Universiti Kebangsaan Malaysia
publishDate 2014
url http://journalarticle.ukm.my/7520/1/14_Hatika_Kaco.pdf
http://journalarticle.ukm.my/7520/
http://www.ukm.my/jsm
_version_ 1643737159957479424
score 13.211869

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