Effect of preswelling on radiation degradation of cotton cellulose

T. Tóth, J. Borsa, E. Takács

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Cotton cellulose was swollen in aqueous solutions of sodium hydroxide and tetramethylammonium hydroxide (TMAH), respectively, in the presence of air. Samples after neutralization and drying were irradiated in open air (3, 10, and 20kGy) in dry form (water content about 8-10%). Degree of polymerization (DP) and FTIR spectra were determined as a function of base concentration. Decrease of DP during irradiation was restrained by base pretreatment of cellulose probably due to the crosslinks developed. This effect was observed at low concentration as well where no crystal transition occurs. In the FTIR spectra absorbances belonging to the intermolecular H bonds decreased with increasing base concentration. High-energy irradiation resulted in a further decrease of intermolecular hydrogen bonds. It was assumed that crosslinking was assisted by the increased mobility of molecular chains in the amorphous part of base-treated cellulose. Effect of preswelling was more significant for TMAH-treated samples.

Original languageEnglish
Pages (from-to)513-515
Number of pages3
JournalRadiation Physics and Chemistry
Volume67
Issue number3-4
DOIs
Publication statusPublished - Jun 1 2003

Fingerprint

cotton
cellulose
degradation
hydroxides
radiation
polymerization
irradiation
molecular chains
sodium hydroxides
air
crosslinking
pretreatment
drying
moisture content
low concentrations
hydrogen bonds
aqueous solutions
crystals
energy

Keywords

  • Cellulose
  • FTIR
  • Radiation
  • Swelling
  • Tetramethylammonium hydroxide

ASJC Scopus subject areas

  • Radiation

Cite this

Effect of preswelling on radiation degradation of cotton cellulose. / Tóth, T.; Borsa, J.; Takács, E.

In: Radiation Physics and Chemistry, Vol. 67, No. 3-4, 01.06.2003, p. 513-515.

Research output: Contribution to journalArticle

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