Isolation of cellulose fibers from kenaf using electron beam

Cellulose fibers were isolated from a kenaf bast fiber using a electron beam irradiation (EBI) treatment. The methods of isolation were based on a hot water treatment after EBI and two-step bleaching processes. FT-IR spectroscopy demonstrated that the content of lignin and hemicellulose in the bleac...

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Published inRadiation physics and chemistry (Oxford, England : 1993) Vol. 81; no. 8; pp. 936 - 940
Main Authors Shin, Hye Kyoung, Pyo Jeun, Joon, Bin Kim, Hyun, Hyun Kang, Phil
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2012
Subjects
Alkali cooking
Bleaching
Cellulose fiber
Cellulose fibers
Crystallinity
Electron beam
Electron beams
Fibers
Heating
Hot water
Irradiation
Kenaf
Pulp
Electron beam
Irradiation
Kenaf
Alkali cooking
Cellulose fiber
Pulp
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Summary:Cellulose fibers were isolated from a kenaf bast fiber using a electron beam irradiation (EBI) treatment. The methods of isolation were based on a hot water treatment after EBI and two-step bleaching processes. FT-IR spectroscopy demonstrated that the content of lignin and hemicellulose in the bleached cellulose fibers treated with various EBI doses decreased with increasing doses of EBI. Specifically, the lignin in the bleached cellulose fibers treated at 300kGy, was almost completely removed. Moreover, XRD analyses showed that the bleached cellulose fibers treated at 300kGy presented the highest crystallinity of all the samples treated with EBI. Finally, the morphology of the bleached fiber was characterized by SEM imagery, and the studies showed that the separated degree of bleached cellulose fibers treated with various EBI doses increased with an increase of EBI dose, and the bleached cellulose fibers obtained by EBI treatment at 300kGy was separated more uniformly than the bleached cellulose fiber obtained by alkali cooking with non-irradiated kenaf fiber. ► This study was to provide a progressive and convenient cellulose isolation process. ► Using an electron beam irradiation, we can obtain cellulose fibers using only water without chemicals during cooking process. ► We think that this cellulose isolation method will have an effect on enormous environmental and economic benefits.
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ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2011.10.010