Mechanical and physical characterization of sodium hydroxide treated Borassus fruit fibers

K. Obi Reddy, M. Shukla, C. Uma Maheswari, A. Varada Rajulu

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In order to improve the properties by chemical modification and to optimize the alkali concentration, we treated Borassus fruit fine fibers with aqueous sodium hydroxide solutions of different concentrations. In each case, the tensile properties of the fibers were determined. The morphology of the untreated and alkali treated fibers was observed using scanning electron microscope. The surface of the fibers became rough on alkali treatment. The tensile properties of the fibers improved on alkali treatment. The fibers attained maximum tensile properties when treated with 15% aqueous sodium hydroxide solution and decreased thereafter. The crystallinity index of the fibers showed a similar trend. The thermal stability of the alkali treated fibers was found to be higher than that of untreated fibers. Further, the char content was maximum for fibers treated with alkali having concentration of 15% and above. The chemical composition indicated that the percentageof α-cellulose was maximum when the fibers were treated with 15% aqueous sodium hydroxide solution and then decreased thereafter thus indicating the beginning of degradation of the fibers at higher concentrations. Thus, the optimum concentration of NaOH was established as 15% for alkali treatment of the Borassus fibers. © 2012 Northeast Forestry University and Springer-Verlag Berlin Heidelberg.
Original languageEnglish
Pages (from-to)667-674
Number of pages8
JournalJournal of Forestry Research
Volume23
Issue number4
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Borassus
sodium hydroxide
alkali treatment
alkalis
hydroxide
fruit
sodium
fruits
water
thermal stability
scanning electron microscopes
forestry
cellulose
chemical composition
degradation
fibre

Bibliographical note

cited By 6

Keywords

  • biochemical composition
  • biomechanics
  • cellulose
  • charcoal
  • chemical alteration
  • concentration (composition)
  • fruit
  • monocotyledon
  • optimization
  • physical property
  • sodium
  • spectral analysis, Borassus

Cite this

Obi Reddy, K. ; Shukla, M. ; Uma Maheswari, C. ; Varada Rajulu, A. / Mechanical and physical characterization of sodium hydroxide treated Borassus fruit fibers. In: Journal of Forestry Research. 2012 ; Vol. 23, No. 4. pp. 667-674.
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abstract = "In order to improve the properties by chemical modification and to optimize the alkali concentration, we treated Borassus fruit fine fibers with aqueous sodium hydroxide solutions of different concentrations. In each case, the tensile properties of the fibers were determined. The morphology of the untreated and alkali treated fibers was observed using scanning electron microscope. The surface of the fibers became rough on alkali treatment. The tensile properties of the fibers improved on alkali treatment. The fibers attained maximum tensile properties when treated with 15{\%} aqueous sodium hydroxide solution and decreased thereafter. The crystallinity index of the fibers showed a similar trend. The thermal stability of the alkali treated fibers was found to be higher than that of untreated fibers. Further, the char content was maximum for fibers treated with alkali having concentration of 15{\%} and above. The chemical composition indicated that the percentageof α-cellulose was maximum when the fibers were treated with 15{\%} aqueous sodium hydroxide solution and then decreased thereafter thus indicating the beginning of degradation of the fibers at higher concentrations. Thus, the optimum concentration of NaOH was established as 15{\%} for alkali treatment of the Borassus fibers. {\circledC} 2012 Northeast Forestry University and Springer-Verlag Berlin Heidelberg.",
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Mechanical and physical characterization of sodium hydroxide treated Borassus fruit fibers. / Obi Reddy, K.; Shukla, M.; Uma Maheswari, C.; Varada Rajulu, A.

In: Journal of Forestry Research, Vol. 23, No. 4, 2012, p. 667-674.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Mechanical and physical characterization of sodium hydroxide treated Borassus fruit fibers

AU - Obi Reddy, K.

AU - Shukla, M.

AU - Uma Maheswari, C.

AU - Varada Rajulu, A.

N1 - cited By 6

PY - 2012

Y1 - 2012

N2 - In order to improve the properties by chemical modification and to optimize the alkali concentration, we treated Borassus fruit fine fibers with aqueous sodium hydroxide solutions of different concentrations. In each case, the tensile properties of the fibers were determined. The morphology of the untreated and alkali treated fibers was observed using scanning electron microscope. The surface of the fibers became rough on alkali treatment. The tensile properties of the fibers improved on alkali treatment. The fibers attained maximum tensile properties when treated with 15% aqueous sodium hydroxide solution and decreased thereafter. The crystallinity index of the fibers showed a similar trend. The thermal stability of the alkali treated fibers was found to be higher than that of untreated fibers. Further, the char content was maximum for fibers treated with alkali having concentration of 15% and above. The chemical composition indicated that the percentageof α-cellulose was maximum when the fibers were treated with 15% aqueous sodium hydroxide solution and then decreased thereafter thus indicating the beginning of degradation of the fibers at higher concentrations. Thus, the optimum concentration of NaOH was established as 15% for alkali treatment of the Borassus fibers. © 2012 Northeast Forestry University and Springer-Verlag Berlin Heidelberg.

AB - In order to improve the properties by chemical modification and to optimize the alkali concentration, we treated Borassus fruit fine fibers with aqueous sodium hydroxide solutions of different concentrations. In each case, the tensile properties of the fibers were determined. The morphology of the untreated and alkali treated fibers was observed using scanning electron microscope. The surface of the fibers became rough on alkali treatment. The tensile properties of the fibers improved on alkali treatment. The fibers attained maximum tensile properties when treated with 15% aqueous sodium hydroxide solution and decreased thereafter. The crystallinity index of the fibers showed a similar trend. The thermal stability of the alkali treated fibers was found to be higher than that of untreated fibers. Further, the char content was maximum for fibers treated with alkali having concentration of 15% and above. The chemical composition indicated that the percentageof α-cellulose was maximum when the fibers were treated with 15% aqueous sodium hydroxide solution and then decreased thereafter thus indicating the beginning of degradation of the fibers at higher concentrations. Thus, the optimum concentration of NaOH was established as 15% for alkali treatment of the Borassus fibers. © 2012 Northeast Forestry University and Springer-Verlag Berlin Heidelberg.

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