$Isolation and fractionation of cellulose nanocrystals from kenaf core$

Isolation and fractionation of cellulose nanocrystals from kenaf core

In this study, cellulose nanocrystals (CNC) were produced using acid hydrolysis method. Kenaf core was pretreated with 4 wt. % sodium hydroxide (NaOH), followed by bleaching using 1.7 wt. % sodium chlorite (NaClO2) in acetate buffer. The bleached fiber was acid hydrolyzed for 45 and 55 min using 64...

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Main Authors:	Hanisah Syed Sulaiman, Chi, Hoong Chan, Chin, Hua Chia, Sarani Zakaria, Sharifah Nabihah Syed Jaafar
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2015
Online Access:	http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/1/14_Hanisah_Syed_Sulaiman.pdf

id	ukm-9373
recordtype	eprints
spelling	ukm-93732016-12-14T06:49:44Z http://journalarticle.ukm.my/9373/ Isolation and fractionation of cellulose nanocrystals from kenaf core Hanisah Syed Sulaiman, Chi, Hoong Chan Chin, Hua Chia Sarani Zakaria, Sharifah Nabihah Syed Jaafar, In this study, cellulose nanocrystals (CNC) were produced using acid hydrolysis method. Kenaf core was pretreated with 4 wt. % sodium hydroxide (NaOH), followed by bleaching using 1.7 wt. % sodium chlorite (NaClO2) in acetate buffer. The bleached fiber was acid hydrolyzed for 45 and 55 min using 64 wt. % sulfuric acid (H2SO4). The size distribution of the CNC segregated via differential centrifugation with different speed was also investigated. The CNC suspension obtained was centrifuged at 3000, 6000, 9000 and 12000 rpm. The resultant CNC suspension collected was characterized using Fourier transform infrared (FTIR) analysis, X-ray diffraction (XRD) and transmission electron microscopy (TEM). FTIR results showed the progressive removal of non-cellulosic constituents for each subsequent treatment. It also showed that the CNC produced after hydrolysing for 55 min has the highest degree of crystallinity (81.15%). CNC produced from acid hydrolysis process of 45 min have lengths between 50 and 270 nm while CNC produced from acid hydrolysis process of 55 min have length around 40 to 370 nm. Universiti Kebangsaan Malaysia 2015-11 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9373/1/14_Hanisah_Syed_Sulaiman.pdf Hanisah Syed Sulaiman, and Chi, Hoong Chan and Chin, Hua Chia and Sarani Zakaria, and Sharifah Nabihah Syed Jaafar, (2015) Isolation and fractionation of cellulose nanocrystals from kenaf core. Sains Malaysiana, 44 (11). pp. 1635-1642. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid44bil11_2015/KandunganJilid44Bil11_2015.html
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, cellulose nanocrystals (CNC) were produced using acid hydrolysis method. Kenaf core was pretreated with 4 wt. % sodium hydroxide (NaOH), followed by bleaching using 1.7 wt. % sodium chlorite (NaClO2) in acetate buffer. The bleached fiber was acid hydrolyzed for 45 and 55 min using 64 wt. % sulfuric acid (H2SO4). The size distribution of the CNC segregated via differential centrifugation with different speed was also investigated. The CNC suspension obtained was centrifuged at 3000, 6000, 9000 and 12000 rpm. The resultant CNC suspension collected was characterized using Fourier transform infrared (FTIR) analysis, X-ray diffraction (XRD) and transmission electron microscopy (TEM). FTIR results showed the progressive removal of non-cellulosic constituents for each subsequent treatment. It also showed that the CNC produced after hydrolysing for 55 min has the highest degree of crystallinity (81.15%). CNC produced from acid hydrolysis process of 45 min have lengths between 50 and 270 nm while CNC produced from acid hydrolysis process of 55 min have length around 40 to 370 nm.
format	Article
author	Hanisah Syed Sulaiman, Chi, Hoong Chan Chin, Hua Chia Sarani Zakaria, Sharifah Nabihah Syed Jaafar,
spellingShingle	Hanisah Syed Sulaiman, Chi, Hoong Chan Chin, Hua Chia Sarani Zakaria, Sharifah Nabihah Syed Jaafar, Isolation and fractionation of cellulose nanocrystals from kenaf core
author_facet	Hanisah Syed Sulaiman, Chi, Hoong Chan Chin, Hua Chia Sarani Zakaria, Sharifah Nabihah Syed Jaafar,
author_sort	Hanisah Syed Sulaiman,
title	Isolation and fractionation of cellulose nanocrystals from kenaf core
title_short	Isolation and fractionation of cellulose nanocrystals from kenaf core
title_full	Isolation and fractionation of cellulose nanocrystals from kenaf core
title_fullStr	Isolation and fractionation of cellulose nanocrystals from kenaf core
title_full_unstemmed	Isolation and fractionation of cellulose nanocrystals from kenaf core
title_sort	isolation and fractionation of cellulose nanocrystals from kenaf core
publisher	Universiti Kebangsaan Malaysia
publishDate	2015
url	http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/1/14_Hanisah_Syed_Sulaiman.pdf
first_indexed	2023-09-18T19:54:41Z
last_indexed	2023-09-18T19:54:41Z
_version_	1777406450066259968

Isolation and fractionation of cellulose nanocrystals from kenaf core

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