Synthesis of nanocellulose from rubberwood fibers

This research deals with the synthesis of nanocellulose from rubberwood (Hevea brasiliensis) fibers via ultrasonication combined with enzymatic and chemical pretreatments. Cellulose nanofibers were separated from rubberwood fibers in three distinct stages. Initially, rubberwood fibers were subjected...

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Main Author:	Siew Kim, Ng
Format:	Undergraduates Project Papers
Language:	English
Published:	2014
Subjects:	TS Manufactures
Online Access:	http://umpir.ump.edu.my/id/eprint/10686/ http://umpir.ump.edu.my/id/eprint/10686/ http://umpir.ump.edu.my/id/eprint/10686/1/FKKSA%20-%20NG%20SIEW%20KIM%20%28CD8734%29%205.pdf

id	ump-10686
recordtype	eprints
spelling	ump-106862015-10-08T02:03:13Z http://umpir.ump.edu.my/id/eprint/10686/ Synthesis of nanocellulose from rubberwood fibers Siew Kim, Ng TS Manufactures This research deals with the synthesis of nanocellulose from rubberwood (Hevea brasiliensis) fibers via ultrasonication combined with enzymatic and chemical pretreatments. Cellulose nanofibers were separated from rubberwood fibers in three distinct stages. Initially, rubberwood fibers were subjected to a series of enzymatic and chemical pre-treatments to eliminate lignin and hemicellulose. The obtained cellulose fibers were then mechanically separated into nanofibers using ultrasonication. The diameter distributions of the resulting nanofibers were dependent on the output power of ultrasonic treatment. The extent of dispersion improved significantly with increasing output power of ultrasonic treatment. Microscopy study showed that the diameters of the nanofibers isolated ranged from 8.7 to 20 μm. The effectiveness of laccase and xylanase enzymes was also studied. The results obtained from FTIR and thermogravimetric analyses indicated that there were consistencies between the studied enzymes to the thermal stability or chemical structure. FTIR spectroscopy confirmed that the prominent peaks indicating that most of the lignin and hemicellulose were removed during the step-wise chemical treatment were present in the spectrum. FTIR spectroscopy suggested that the spectrum of cellulose nanofibers obtained under different ultrasonic output powers and cellulose fibers were similar, signifying that the molecular structure of cellulose were unaffected by the ultrasonic treatment. Results from TGA analysis revealed that the thermal properties of cellulose nanofibers were enhanced and the thermal degradation temperature increased to proximately 310 °C as compared to 240 °C of the untreated rubberwood fibers. Results from this work may be potentially applied in various fields such as bio-nanocomposites, filtration media packaging, tissue engineering scaffolds, and so on 2014 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/10686/1/FKKSA%20-%20NG%20SIEW%20KIM%20%28CD8734%29%205.pdf Siew Kim, Ng (2014) Synthesis of nanocellulose from rubberwood fibers. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:88176&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TS Manufactures
spellingShingle	TS Manufactures Siew Kim, Ng Synthesis of nanocellulose from rubberwood fibers
description	This research deals with the synthesis of nanocellulose from rubberwood (Hevea brasiliensis) fibers via ultrasonication combined with enzymatic and chemical pretreatments. Cellulose nanofibers were separated from rubberwood fibers in three distinct stages. Initially, rubberwood fibers were subjected to a series of enzymatic and chemical pre-treatments to eliminate lignin and hemicellulose. The obtained cellulose fibers were then mechanically separated into nanofibers using ultrasonication. The diameter distributions of the resulting nanofibers were dependent on the output power of ultrasonic treatment. The extent of dispersion improved significantly with increasing output power of ultrasonic treatment. Microscopy study showed that the diameters of the nanofibers isolated ranged from 8.7 to 20 μm. The effectiveness of laccase and xylanase enzymes was also studied. The results obtained from FTIR and thermogravimetric analyses indicated that there were consistencies between the studied enzymes to the thermal stability or chemical structure. FTIR spectroscopy confirmed that the prominent peaks indicating that most of the lignin and hemicellulose were removed during the step-wise chemical treatment were present in the spectrum. FTIR spectroscopy suggested that the spectrum of cellulose nanofibers obtained under different ultrasonic output powers and cellulose fibers were similar, signifying that the molecular structure of cellulose were unaffected by the ultrasonic treatment. Results from TGA analysis revealed that the thermal properties of cellulose nanofibers were enhanced and the thermal degradation temperature increased to proximately 310 °C as compared to 240 °C of the untreated rubberwood fibers. Results from this work may be potentially applied in various fields such as bio-nanocomposites, filtration media packaging, tissue engineering scaffolds, and so on
format	Undergraduates Project Papers
author	Siew Kim, Ng
author_facet	Siew Kim, Ng
author_sort	Siew Kim, Ng
title	Synthesis of nanocellulose from rubberwood fibers
title_short	Synthesis of nanocellulose from rubberwood fibers
title_full	Synthesis of nanocellulose from rubberwood fibers
title_fullStr	Synthesis of nanocellulose from rubberwood fibers
title_full_unstemmed	Synthesis of nanocellulose from rubberwood fibers
title_sort	synthesis of nanocellulose from rubberwood fibers
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/10686/ http://umpir.ump.edu.my/id/eprint/10686/ http://umpir.ump.edu.my/id/eprint/10686/1/FKKSA%20-%20NG%20SIEW%20KIM%20%28CD8734%29%205.pdf
first_indexed	2023-09-18T22:10:34Z
last_indexed	2023-09-18T22:10:34Z
_version_	1777414999217537024

Synthesis of nanocellulose from rubberwood fibers

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