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Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose

Depolymerization of cellulose is the critical step to breaking down the cellulose into different chain lengths of oligomers. Cellulose depolymerized using salt-assisted organic-acid-catalysis had been characterized as a green and cost-effective approach. The inexpensive sodium chloride (NaCl) with o...

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Main Author: Lim Hui, Yin
Format: Final Year Project Report
Language:English
English
Published: Universiti Malaysia Sarawak, (UNIMAS) 2014
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://ir.unimas.my/id/eprint/32565/1/Hui.pdf
http://ir.unimas.my/id/eprint/32565/4/Lim%20Hui%20Yin%20ft.pdf
http://ir.unimas.my/id/eprint/32565/
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spelling my.unimas.ir.325652024-03-01T02:33:24Z http://ir.unimas.my/id/eprint/32565/ Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose Lim Hui, Yin Q Science (General) QD Chemistry Depolymerization of cellulose is the critical step to breaking down the cellulose into different chain lengths of oligomers. Cellulose depolymerized using salt-assisted organic-acid-catalysis had been characterized as a green and cost-effective approach. The inexpensive sodium chloride (NaCl) with oxalic acid as catalyst was introduced into a reflux system to perform an acid-catalyzed depolymerization of cellulose under mild reactions conditions (105-150°C). The depolymerized cellulose was characterized using FTIR, SEM and UV-VIS spectrophotometer. The salt concentration and temperature had substantial influence on the degree of polymerization (DP) of cellulose and glucose concentration. The glucose concentration was determined by using UV-VIS spectrophotometer by the measuring absorbance at 540 nm. The measurement of specific viscosity was carried out to determine the DP of cellulose. The lower the DP of cellulose indicated the more oligomers were obtained. Universiti Malaysia Sarawak, (UNIMAS) 2014 Final Year Project Report NonPeerReviewed text en http://ir.unimas.my/id/eprint/32565/1/Hui.pdf text en http://ir.unimas.my/id/eprint/32565/4/Lim%20Hui%20Yin%20ft.pdf Lim Hui, Yin (2014) Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose. [Final Year Project Report] (Unpublished)
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
English
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Lim Hui, Yin
Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
description Depolymerization of cellulose is the critical step to breaking down the cellulose into different chain lengths of oligomers. Cellulose depolymerized using salt-assisted organic-acid-catalysis had been characterized as a green and cost-effective approach. The inexpensive sodium chloride (NaCl) with oxalic acid as catalyst was introduced into a reflux system to perform an acid-catalyzed depolymerization of cellulose under mild reactions conditions (105-150°C). The depolymerized cellulose was characterized using FTIR, SEM and UV-VIS spectrophotometer. The salt concentration and temperature had substantial influence on the degree of polymerization (DP) of cellulose and glucose concentration. The glucose concentration was determined by using UV-VIS spectrophotometer by the measuring absorbance at 540 nm. The measurement of specific viscosity was carried out to determine the DP of cellulose. The lower the DP of cellulose indicated the more oligomers were obtained.
format Final Year Project Report
author Lim Hui, Yin
author_facet Lim Hui, Yin
author_sort Lim Hui, Yin
title Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
title_short Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
title_full Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
title_fullStr Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
title_full_unstemmed Value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
title_sort value-added utilization of cellulose derived from paper waste: depolymerization of cellulose
publisher Universiti Malaysia Sarawak, (UNIMAS)
publishDate 2014
url http://ir.unimas.my/id/eprint/32565/1/Hui.pdf
http://ir.unimas.my/id/eprint/32565/4/Lim%20Hui%20Yin%20ft.pdf
http://ir.unimas.my/id/eprint/32565/
_version_ 1792658554598981632
score 13.211869

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