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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Main Authors:	Lai, Jau Choy, Wan Aizan Wan Abdul Rahman, Avérous, Luc, Lim, Teck Hock
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2016
Online Access:	http://journalarticle.ukm.my/9755/ http://journalarticle.ukm.my/9755/ http://journalarticle.ukm.my/9755/1/18_Jau_Choy_Lai.pdf

id	ukm-9755
recordtype	eprints
spelling	ukm-97552016-12-14T06:50:45Z http://journalarticle.ukm.my/9755/ Study and characterisation of the post processing ageing of sago pith waste biocomposites Lai, Jau Choy Wan Aizan Wan Abdul Rahman, Avérous, Luc Lim, Teck Hock 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 2016-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9755/1/18_Jau_Choy_Lai.pdf Lai, Jau Choy and Wan Aizan Wan Abdul Rahman, 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 http://www.ukm.my/jsm/malay_journals/jilid45bil4_2016/KandunganJilid45Bil4_2016.htm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
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.
format	Article
author	Lai, Jau Choy Wan Aizan Wan Abdul Rahman, Avérous, Luc Lim, Teck Hock
spellingShingle	Lai, Jau Choy Wan Aizan Wan Abdul Rahman, Avérous, Luc Lim, Teck Hock Study and characterisation of the post processing ageing of sago pith waste biocomposites
author_facet	Lai, Jau Choy Wan Aizan Wan Abdul Rahman, Avérous, Luc Lim, Teck Hock
author_sort	Lai, Jau Choy
title	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_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_sort	study and characterisation of the post processing ageing of sago pith waste biocomposites
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2016
url	http://journalarticle.ukm.my/9755/ http://journalarticle.ukm.my/9755/ http://journalarticle.ukm.my/9755/1/18_Jau_Choy_Lai.pdf
first_indexed	2023-09-18T19:55:36Z
last_indexed	2023-09-18T19:55:36Z
_version_	1777406508392251392

Study and characterisation of the post processing ageing of sago pith waste biocomposites

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