Extraction and characterization of cellulose microfibrils from agricultural residue - Cocos nucifera L

C. Uma Maheswari, K. Obi Reddy, E. Muzenda, B. R. Guduri, A. Varada Rajulu

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

The aim of this study was to extract cellulose microfibrils from the agricultural residue of coconut palm leaf sheath using chlorination and alkaline extraction process. Chemical characterization of the cellulose microfibrils confirmed that the α-cellulose mass fraction increased from 0.373 kg kg -1 to 0.896 kg kg -1 after application of several treatments including dewaxing, chlorite delignification and alkaline extraction of hemicelluloses. Similarly, the crystallinity index obtained from X-ray diffraction for leaf sheath and extracted cellulose microfibrils was found to be 42.3 and 47.7 respectively. The morphology of the cellulose microfibrils was investigated by scanning electron microscopy. The cellulose microfibrils had diameters in the range of 10-15 μm. Fourier transform infrared and Nuclear magnetic resonance spectroscopy showed that the chemical treatments removed most of the hemicellulose and lignin from the leaf sheath fibers. The thermal stability of the fibers was analyzed using thermogravimetric analysis, which demonstrated that this thermal stability was enhanced noticeably for cellulose microfibrils. This work provides a new approach for more effective utilization of coconut palm leaf sheaths to examine their potential use as pulp and paper and reinforcement fibers in biocomposite applications.

Original languageEnglish
Pages (from-to)555-563
Number of pages9
JournalBiomass and Bioenergy
Volume46
DOIs
Publication statusPublished - Nov 1 2012

Fingerprint

Agricultural wastes
Cocos nucifera
cellulose
Cellulose
thermal stability
hemicellulose
leaves
Thermodynamic stability
biocomposites
Dewaxing
thermogravimetry
chlorites
delignification
chlorination
Delignification
Fibers
Chlorination
chemical treatment
crystallinity
Fiber reinforced materials

All Science Journal Classification (ASJC) codes

  • Forestry
  • Renewable Energy, Sustainability and the Environment
  • Agronomy and Crop Science
  • Waste Management and Disposal

Cite this

Uma Maheswari, C. ; Obi Reddy, K. ; Muzenda, E. ; Guduri, B. R. ; Varada Rajulu, A. / Extraction and characterization of cellulose microfibrils from agricultural residue - Cocos nucifera L. In: Biomass and Bioenergy. 2012 ; Vol. 46. pp. 555-563.
@article{46bc9c6fe45748489b9d7d032bfeff96,
title = "Extraction and characterization of cellulose microfibrils from agricultural residue - Cocos nucifera L",
abstract = "The aim of this study was to extract cellulose microfibrils from the agricultural residue of coconut palm leaf sheath using chlorination and alkaline extraction process. Chemical characterization of the cellulose microfibrils confirmed that the α-cellulose mass fraction increased from 0.373 kg kg -1 to 0.896 kg kg -1 after application of several treatments including dewaxing, chlorite delignification and alkaline extraction of hemicelluloses. Similarly, the crystallinity index obtained from X-ray diffraction for leaf sheath and extracted cellulose microfibrils was found to be 42.3 and 47.7 respectively. The morphology of the cellulose microfibrils was investigated by scanning electron microscopy. The cellulose microfibrils had diameters in the range of 10-15 μm. Fourier transform infrared and Nuclear magnetic resonance spectroscopy showed that the chemical treatments removed most of the hemicellulose and lignin from the leaf sheath fibers. The thermal stability of the fibers was analyzed using thermogravimetric analysis, which demonstrated that this thermal stability was enhanced noticeably for cellulose microfibrils. This work provides a new approach for more effective utilization of coconut palm leaf sheaths to examine their potential use as pulp and paper and reinforcement fibers in biocomposite applications.",
author = "{Uma Maheswari}, C. and {Obi Reddy}, K. and E. Muzenda and Guduri, {B. R.} and {Varada Rajulu}, A.",
year = "2012",
month = "11",
day = "1",
doi = "10.1016/j.biombioe.2012.06.039",
language = "English",
volume = "46",
pages = "555--563",
journal = "Biomass and Bioenergy",
issn = "0961-9534",
publisher = "Elsevier Limited",

}

Extraction and characterization of cellulose microfibrils from agricultural residue - Cocos nucifera L. / Uma Maheswari, C.; Obi Reddy, K.; Muzenda, E.; Guduri, B. R.; Varada Rajulu, A.

In: Biomass and Bioenergy, Vol. 46, 01.11.2012, p. 555-563.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Extraction and characterization of cellulose microfibrils from agricultural residue - Cocos nucifera L

AU - Uma Maheswari, C.

AU - Obi Reddy, K.

AU - Muzenda, E.

AU - Guduri, B. R.

AU - Varada Rajulu, A.

PY - 2012/11/1

Y1 - 2012/11/1

N2 - The aim of this study was to extract cellulose microfibrils from the agricultural residue of coconut palm leaf sheath using chlorination and alkaline extraction process. Chemical characterization of the cellulose microfibrils confirmed that the α-cellulose mass fraction increased from 0.373 kg kg -1 to 0.896 kg kg -1 after application of several treatments including dewaxing, chlorite delignification and alkaline extraction of hemicelluloses. Similarly, the crystallinity index obtained from X-ray diffraction for leaf sheath and extracted cellulose microfibrils was found to be 42.3 and 47.7 respectively. The morphology of the cellulose microfibrils was investigated by scanning electron microscopy. The cellulose microfibrils had diameters in the range of 10-15 μm. Fourier transform infrared and Nuclear magnetic resonance spectroscopy showed that the chemical treatments removed most of the hemicellulose and lignin from the leaf sheath fibers. The thermal stability of the fibers was analyzed using thermogravimetric analysis, which demonstrated that this thermal stability was enhanced noticeably for cellulose microfibrils. This work provides a new approach for more effective utilization of coconut palm leaf sheaths to examine their potential use as pulp and paper and reinforcement fibers in biocomposite applications.

AB - The aim of this study was to extract cellulose microfibrils from the agricultural residue of coconut palm leaf sheath using chlorination and alkaline extraction process. Chemical characterization of the cellulose microfibrils confirmed that the α-cellulose mass fraction increased from 0.373 kg kg -1 to 0.896 kg kg -1 after application of several treatments including dewaxing, chlorite delignification and alkaline extraction of hemicelluloses. Similarly, the crystallinity index obtained from X-ray diffraction for leaf sheath and extracted cellulose microfibrils was found to be 42.3 and 47.7 respectively. The morphology of the cellulose microfibrils was investigated by scanning electron microscopy. The cellulose microfibrils had diameters in the range of 10-15 μm. Fourier transform infrared and Nuclear magnetic resonance spectroscopy showed that the chemical treatments removed most of the hemicellulose and lignin from the leaf sheath fibers. The thermal stability of the fibers was analyzed using thermogravimetric analysis, which demonstrated that this thermal stability was enhanced noticeably for cellulose microfibrils. This work provides a new approach for more effective utilization of coconut palm leaf sheaths to examine their potential use as pulp and paper and reinforcement fibers in biocomposite applications.

UR - http://www.scopus.com/inward/record.url?scp=84868494685&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84868494685&partnerID=8YFLogxK

U2 - 10.1016/j.biombioe.2012.06.039

DO - 10.1016/j.biombioe.2012.06.039

M3 - Article

AN - SCOPUS:84868494685

VL - 46

SP - 555

EP - 563

JO - Biomass and Bioenergy

JF - Biomass and Bioenergy

SN - 0961-9534

ER -