Effect of G/M ratio on the radiation-induced degradation of sodium alginate

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Şen M., Rendevski S., Kavakli P., Sepehrianazar A.

Radiation Physics and Chemistry, cilt.79, sa.3, ss.279-282, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 79 Sayı: 3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.radphyschem.2009.08.028
  • Dergi Adı: Radiation Physics and Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.279-282
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Radiation-induced degradation of sodium alginate (NaAlg) having different G/M ratios was investigated. NaAlg samples were irradiated with gamma rays in air at ambient temperature in the solid state at low dose rate. Change in their molecular weights was followed by size exclusion chromatography (SEC). Changes in their theological properties and viscosity values as a function of temperature, shear rate and irradiation dose were also determined. Chain scission yields, C(S), and degradation rates were calculated. It was observed that G/M ratio was an important factor controlling the G(S) and degradation rate of sodium alginate. (C) 2009 Elsevier Ltd. All rights reserved.

Radiation-induced degradation of sodium alginate (NaAlg) having different G/M ratios was investigated. NaAlg samples were irradiated with gamma rays in air at ambient temperature in the solid state at low dose rate. Change in their molecular weights was followed by size exclusion chromatography (SEC). Changes in their rheological properties and viscosity values as a function of temperature, shear rate and irradiation dose were also determined. Chain scission yields, G(S), and degradation rates were calculated. It was observed that G/M ratio was an important factor controlling the G(S) and degradation rate of sodium alginate.