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Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber

The aim was to extract cellulose nanocrystals (CNC) from tea leaves waste fibers (TLWF) by treated the fibers with alkali and then followed by bleached treatment before hydrolyzed with concentrated sulfuric acid (H2SO4). The materials obtained after each stage of chemical treatments was carefully ch...

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Principais autores: Abdul Rahman, Nur Hayati, Ibrahim, Nor Azowa, Chieng, Buong Woei, Abdul Rahman, Norizah
Formato: Conference or Workshop Item
Idioma:English
Publicado em: 2017
Acesso em linha:http://psasir.upm.edu.my/id/eprint/64398/1/MST%20oral%20111117%202.pdf
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spelling oai:psasir.upm.edu.my:64398 http://psasir.upm.edu.my/id/eprint/64398/ Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber Abdul Rahman, Nur Hayati Ibrahim, Nor Azowa Chieng, Buong Woei Abdul Rahman, Norizah The aim was to extract cellulose nanocrystals (CNC) from tea leaves waste fibers (TLWF) by treated the fibers with alkali and then followed by bleached treatment before hydrolyzed with concentrated sulfuric acid (H2SO4). The materials obtained after each stage of chemical treatments was carefully characterized and its chemical composition was studied. The structure analysis was examined by Fourier transform infrared (FTIR) spectroscopy, water holding capacity (WHC) and X-ray diffraction (XRD) analysis. From FTIR analysis, two peaks at 1716 cm⁻1 (C=O stretching) and 1207 cm-1 (C-O stretching) slowly disappeared in the spectra after the alkali and bleaching treatments indicated that hemicellulose and lignin were almost entirely removed from the fiber. The morphology and dimensions of the fibers and acid-released CNC were investigated by scanning electron microscope (SEM) and transmission electron microscope (TEM). The extraction of CNC increased the surface roughness and the crystallinity index of fiber from 41.46% to 83.14%. Morphological characterization from TEM clearly showed the appearance of rod-shaped CNCs. The promising results prove that TLWF is a principal source of natural materials which can produce CNC. 2017 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/64398/1/MST%20oral%20111117%202.pdf Abdul Rahman, Nur Hayati and Ibrahim, Nor Azowa and Chieng, Buong Woei and Abdul Rahman, Norizah (2017) Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber. In: 5th International Symposium on Applied Engineering and Sciences (SAES2017), 14-15 Nov. 2017, Universiti Putra Malaysia. (p. 2).
institution UPM IR
collection UPM IR
language English
description The aim was to extract cellulose nanocrystals (CNC) from tea leaves waste fibers (TLWF) by treated the fibers with alkali and then followed by bleached treatment before hydrolyzed with concentrated sulfuric acid (H2SO4). The materials obtained after each stage of chemical treatments was carefully characterized and its chemical composition was studied. The structure analysis was examined by Fourier transform infrared (FTIR) spectroscopy, water holding capacity (WHC) and X-ray diffraction (XRD) analysis. From FTIR analysis, two peaks at 1716 cm⁻1 (C=O stretching) and 1207 cm-1 (C-O stretching) slowly disappeared in the spectra after the alkali and bleaching treatments indicated that hemicellulose and lignin were almost entirely removed from the fiber. The morphology and dimensions of the fibers and acid-released CNC were investigated by scanning electron microscope (SEM) and transmission electron microscope (TEM). The extraction of CNC increased the surface roughness and the crystallinity index of fiber from 41.46% to 83.14%. Morphological characterization from TEM clearly showed the appearance of rod-shaped CNCs. The promising results prove that TLWF is a principal source of natural materials which can produce CNC.
format Conference or Workshop Item
author Abdul Rahman, Nur Hayati
Ibrahim, Nor Azowa
Chieng, Buong Woei
Abdul Rahman, Norizah
spellingShingle Abdul Rahman, Nur Hayati
Ibrahim, Nor Azowa
Chieng, Buong Woei
Abdul Rahman, Norizah
Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
author_facet Abdul Rahman, Nur Hayati
Ibrahim, Nor Azowa
Chieng, Buong Woei
Abdul Rahman, Norizah
author_sort Abdul Rahman, Nur Hayati
title Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
title_short Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
title_full Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
title_fullStr Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
title_full_unstemmed Extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
title_sort extraction and characterization of cellulose nanocrystals from tea leaves waste fiber
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/64398/1/MST%20oral%20111117%202.pdf
_version_ 1819298308611375104
score 13.4562235

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