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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| Format: | Article |
| Language: | English |
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Universiti Kebangsaan Malaysia
2015
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| Online Access: | http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/1/14_Hanisah_Syed_Sulaiman.pdf |
| _version_ | 1848812063813533696 |
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| author | Hanisah Syed Sulaiman, Chi, Hoong Chan Chin, Hua Chia Sarani Zakaria, Sharifah Nabihah Syed Jaafar, |
| author_facet | Hanisah Syed Sulaiman, Chi, Hoong Chan Chin, Hua Chia Sarani Zakaria, Sharifah Nabihah Syed Jaafar, |
| author_sort | Hanisah Syed Sulaiman, |
| building | UKM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T23:56:21Z |
| format | Article |
| id | oai:generic.eprints.org:9373 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T23:56:21Z |
| publishDate | 2015 |
| publisher | Universiti Kebangsaan Malaysia |
| recordtype | eprints |
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| spelling | oai:generic.eprints.org: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 |
| 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 |
| title | 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_short | Isolation and fractionation of cellulose nanocrystals from kenaf core |
| title_sort | isolation and fractionation of cellulose nanocrystals from kenaf core |
| url | http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/ http://journalarticle.ukm.my/9373/1/14_Hanisah_Syed_Sulaiman.pdf |