Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites
The alkaline treatment with 5 wt. % sodium hydroxide (NaOH) solution at room temperature for 24 and 48 h was performed on coir fibre. The structural characterisation, thermal degradation and water absorption ability of the untreated and NaOH-treated coir fibre polymer composites have been studied. S...
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| Format: | Article |
| Language: | English |
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Penerbit Universiti Kebangsaan Malaysia
2019
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| Online Access: | http://journalarticle.ukm.my/13325/ http://journalarticle.ukm.my/13325/1/19%20Been%20Seok%20Yew.pdf |
| _version_ | 1848813245423419392 |
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| author | Yew, Been Seok Martini Muhamad, Saiful Bahri Mohamed, Wee, Fwen Hoon |
| author_facet | Yew, Been Seok Martini Muhamad, Saiful Bahri Mohamed, Wee, Fwen Hoon |
| author_sort | Yew, Been Seok |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | The alkaline treatment with 5 wt. % sodium hydroxide (NaOH) solution at room temperature for 24 and 48 h was performed on coir fibre. The structural characterisation, thermal degradation and water absorption ability of the untreated and NaOH-treated coir fibre polymer composites have been studied. Scanning electron microscope (SEM) images showed that coir fibres treated with NaOH have rough surface texture and the roughness of the fibre surface becomes significant as the duration of the NaOH treatment increased. Fourier transform infrared (FTIR) spectra confirmed that NaOH treatment removed hemicelluloses as evidenced by the absence of absorption bands at 1724.36 cm-1 and changes the absorption intensity at bands 1244.09 cm-1and 1249.87 cm-1 due to the loss of lignin. NaOH-treated coir fibre composites demonstrated better thermal stability at low temperature degradation. At high temperature, the thermal stability was reduced due to the decreased of residual lignin content. The water absorption of the NaOH-treated coir fibre composites was lower than untreated coir composite contributed by better interfacial adhesion between the NaOH-treated coir fibre to epoxy resin. |
| first_indexed | 2025-11-15T00:15:07Z |
| format | Article |
| id | oai:generic.eprints.org:13325 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:15:07Z |
| publishDate | 2019 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
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| spelling | oai:generic.eprints.org:133252019-08-29T21:42:27Z http://journalarticle.ukm.my/13325/ Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites Yew, Been Seok Martini Muhamad, Saiful Bahri Mohamed, Wee, Fwen Hoon The alkaline treatment with 5 wt. % sodium hydroxide (NaOH) solution at room temperature for 24 and 48 h was performed on coir fibre. The structural characterisation, thermal degradation and water absorption ability of the untreated and NaOH-treated coir fibre polymer composites have been studied. Scanning electron microscope (SEM) images showed that coir fibres treated with NaOH have rough surface texture and the roughness of the fibre surface becomes significant as the duration of the NaOH treatment increased. Fourier transform infrared (FTIR) spectra confirmed that NaOH treatment removed hemicelluloses as evidenced by the absence of absorption bands at 1724.36 cm-1 and changes the absorption intensity at bands 1244.09 cm-1and 1249.87 cm-1 due to the loss of lignin. NaOH-treated coir fibre composites demonstrated better thermal stability at low temperature degradation. At high temperature, the thermal stability was reduced due to the decreased of residual lignin content. The water absorption of the NaOH-treated coir fibre composites was lower than untreated coir composite contributed by better interfacial adhesion between the NaOH-treated coir fibre to epoxy resin. Penerbit Universiti Kebangsaan Malaysia 2019-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/13325/1/19%20Been%20Seok%20Yew.pdf Yew, Been Seok and Martini Muhamad, and Saiful Bahri Mohamed, and Wee, Fwen Hoon (2019) Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites. Sains Malaysiana, 48 (3). pp. 653-659. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil3_2019/KandunganJilid48Bil3_2019.html |
| spellingShingle | Yew, Been Seok Martini Muhamad, Saiful Bahri Mohamed, Wee, Fwen Hoon Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| title | Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| title_full | Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| title_fullStr | Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| title_full_unstemmed | Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| title_short | Effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| title_sort | effect of alkaline treatment on structural characterisation, thermal degradation and water absorption ability of coir fibre polymer composites |
| url | http://journalarticle.ukm.my/13325/ http://journalarticle.ukm.my/13325/ http://journalarticle.ukm.my/13325/1/19%20Been%20Seok%20Yew.pdf |