Study and characterisation of the post processing ageing of sago pith waste biocomposites
This paper reports the post-processing ageing phenomena of thermoplastic sago starch (TPS) and plasticised sago pith waste (SPW), which were processed using twin-screw extrusion and compression moulding techniques. Wide angle X-ray diffraction (XRD) analyses showed that after processing, starch mole...
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Penerbit Universiti Kebangsaan Malaysia
2016
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| _version_ | 1796861974266511360 |
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| author | Lai, Jau Choy Wan Abdul Rahman, Wan Aizan Avérous, Luc Lim, Teck Hock |
| author_facet | Lai, Jau Choy Wan Abdul Rahman, Wan Aizan Avérous, Luc Lim, Teck Hock |
| author_sort | Lai, Jau Choy |
| collection | ePrints |
| description | This paper reports the post-processing ageing phenomena of thermoplastic sago starch (TPS) and plasticised sago pith waste (SPW), which were processed using twin-screw extrusion and compression moulding techniques. Wide angle X-ray diffraction (XRD) analyses showed that after processing, starch molecules rearranged into VH-type (which was formed rapidly right post processing and concluded within 4 days) and B-type (which was formed slowly over a period of months) crystallites. Evidence from Fourier transform infrared spectroscopy (FTIR) analyses corroborated the 2-stage crystallisation process, which observed changes in peak styles and peak intensities (at 1043 and 1026 cm-1) and band-narrowing. Thermogravimetric analysis (TGA) studies showed that the thermal stability of plasticised SPW declined continuously for 90 days before gradual increments ensued. For all formulations tested, post-processing ageing led to drastic changes in the tensile strength (increased) and elongation at break (decreased). Glycerol and fibres restrained the retrogradation of starch molecules in TPS and SPW. |
| first_indexed | 2024-03-05T20:04:32Z |
| format | Article |
| id | utm.eprints-72708 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:04:32Z |
| publishDate | 2016 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| record_format | dspace |
| spelling | utm.eprints-727082017-11-27T05:05:23Z http://eprints.utm.my/72708/ Study and characterisation of the post processing ageing of sago pith waste biocomposites Lai, Jau Choy Wan Abdul Rahman, Wan Aizan Avérous, Luc Lim, Teck Hock TA Engineering (General). Civil engineering (General) This paper reports the post-processing ageing phenomena of thermoplastic sago starch (TPS) and plasticised sago pith waste (SPW), which were processed using twin-screw extrusion and compression moulding techniques. Wide angle X-ray diffraction (XRD) analyses showed that after processing, starch molecules rearranged into VH-type (which was formed rapidly right post processing and concluded within 4 days) and B-type (which was formed slowly over a period of months) crystallites. Evidence from Fourier transform infrared spectroscopy (FTIR) analyses corroborated the 2-stage crystallisation process, which observed changes in peak styles and peak intensities (at 1043 and 1026 cm-1) and band-narrowing. Thermogravimetric analysis (TGA) studies showed that the thermal stability of plasticised SPW declined continuously for 90 days before gradual increments ensued. For all formulations tested, post-processing ageing led to drastic changes in the tensile strength (increased) and elongation at break (decreased). Glycerol and fibres restrained the retrogradation of starch molecules in TPS and SPW. Penerbit Universiti Kebangsaan Malaysia 2016 Article PeerReviewed Lai, Jau Choy and Wan Abdul Rahman, Wan Aizan and Avérous, Luc and Lim, Teck Hock (2016) Study and characterisation of the post processing ageing of sago pith waste biocomposites. Sains Malaysiana, 45 (4). pp. 633-641. ISSN 0126-6039 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966691924&partnerID=40&md5=77abbc61ac5a3465f4c8cfde605a3a57 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Lai, Jau Choy Wan Abdul Rahman, Wan Aizan Avérous, Luc Lim, Teck Hock Study and characterisation of the post processing ageing of sago pith waste biocomposites |
| title | Study and characterisation of the post processing ageing of sago pith waste biocomposites |
| title_full | Study and characterisation of the post processing ageing of sago pith waste biocomposites |
| title_fullStr | Study and characterisation of the post processing ageing of sago pith waste biocomposites |
| title_full_unstemmed | Study and characterisation of the post processing ageing of sago pith waste biocomposites |
| title_short | Study and characterisation of the post processing ageing of sago pith waste biocomposites |
| title_sort | study and characterisation of the post processing ageing of sago pith waste biocomposites |
| topic | TA Engineering (General). Civil engineering (General) |
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