Radiation induced degradation of xanthan gum in the solid state

ŞEN M., Hayrabolulu H., Taskin P., TORUN M., DEMETER M., CUTRUBINIS M., ...Daha Fazla

RADIATION PHYSICS AND CHEMISTRY, cilt.124, ss.225-229, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 124
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.radphyschem.2015.10.005
  • Dergi Adı: RADIATION PHYSICS AND CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.225-229
  • Anahtar Kelimeler: Xanthan gum, degradation, chain scission yield, shear thinning, SODIUM ALGINATE, CHITOSAN
  • Hacettepe Üniversitesi Adresli: Evet

Özet

In this study, the effect of ionizing radiation on xanthan gum was investigated. Xanthan samples were irradiated with gamma rays in air at ambient temperature in the solid state at different dose rates and doses. Change in their molecular weights was followed by size exclusion chromatography (SEC). Chain scission yield (G(S)), and degradation rate constants (k) were calculated. The calculated G(S) values are 0.0151 +/- 0.0015, 0.0144 +/- 0.0020, 0.0098 +/- 0.0010 mu mol/J and k values are 1.4 x 10(-8) +/- 1.4 x 10(-9), 1.3 x 10(-8) +/- 2.0 x 10(-8), 8.7 x 10(-9) +/- 1.0 x 10(-9) Gy(-1) for 0.1, 3.3 and 7.0 kGy/h dose rates, respectively. It was observed that the dose rate was an important factor controlling the G(S) and degradation rate of xanthan gum.