Cellulose fibers dissolution in alkaline solution
Other Title(s)
إذابة ألياف السيليلوز في المحاليل القاعدية
Joint Authors
al-Ghazzali, Ala Karim Muhammad
Hasan, Asim Hasan Muhammad
Mahdi, Yasamin Salih
Source
al-Khwarizmi Engineering Journal
Issue
Vol. 14, Issue 2 (30 Jun. 2018), pp.107-115, 9 p.
Publisher
University of Baghdad al-Khwarizmi College of Engineering
Publication Date
2018-06-30
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Abstract EN
In this study, NaOH dissolution method was applied to dissolve cellulose fibers which extracted from date palm fronds (type Al-Zahdi) taken from Iraqi gardens.
In this process, (NaOH)-solution is brought into contact with the cellulose fibers at low temperature.
Experiments were conducted with different concentrations of NaOH (4%, 6%, 8% and12%) weight percent at two cooling bath temperatures (-15 oC) and (-20oC).
Maximum cellulose dissolution was 23 wt% which obtained at 8 wt% concentration of NaOH and at cooling bath temperature of -20oC.
In order to enhance the cellulose fibers dissolution, the sample was pretreated with Fenton's reagent which consists of hydrogen peroxide (H2O2), oxalic acid (C2H2O4) and ferrous sulfate (FeSO4).
This reagent reacts with cellulose fibers and produces free radicals which increase cellulose dissolution.
In this work three variables were studied: cooling bath temperature (-15oCand-20oC), NaOH concentration (4%, 6%, 8% and12%) and time of Fenton's reagent treatment (1-48) hrs.
The results showed that the best percent of cellulose dissolution was (42 wt %) which occurred at treatment time (24 hours), temperature (-20oC) and NaOH concentration 8%.
In another set of experiments urea was added to NaOH solution as a catalyst with proportion (6%NaOH+4% urea) at two temperatures -15 and -20 oC.
The results show that the solubility of cellulose increase to 62% for the sample which treated with Fenton's reagent and to 35% for the untreated sample, both values were obtained at -15oC.
American Psychological Association (APA)
Mahdi, Yasamin Salih& Hasan, Asim Hasan Muhammad& al-Ghazzali, Ala Karim Muhammad. 2018. Cellulose fibers dissolution in alkaline solution. al-Khwarizmi Engineering Journal،Vol. 14, no. 2, pp.107-115.
https://search.emarefa.net/detail/BIM-838077
Modern Language Association (MLA)
Mahdi, Yasamin Salih…[et al.]. Cellulose fibers dissolution in alkaline solution. al-Khwarizmi Engineering Journal Vol. 14, no. 2 (Jun. 2018), pp.107-115.
https://search.emarefa.net/detail/BIM-838077
American Medical Association (AMA)
Mahdi, Yasamin Salih& Hasan, Asim Hasan Muhammad& al-Ghazzali, Ala Karim Muhammad. Cellulose fibers dissolution in alkaline solution. al-Khwarizmi Engineering Journal. 2018. Vol. 14, no. 2, pp.107-115.
https://search.emarefa.net/detail/BIM-838077
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 113-114
Record ID
BIM-838077