RADIATION INDUCED DEGRADATION OF SODIUM ALGINATE

FU Haiying; YAO Side; WU Guozhong

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RADIATION INDUCED DEGRADATION OF SODIUM ALGINATE

更新时间：2023-03-30

- RADIATION INDUCED DEGRADATION OF SODIUM ALGINATE
- Journal of Radiation Research and Radiation Processing Vol. 21, Issue 3, Pages: 169-173(2003)
- 作者机构：
  
  1.中国科学院上海原子核研究所辐射技术应用研究中心　上海　201800
- 作者简介：
- 基金信息：
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FU Haiying, YAO Side, WU Guozhong. RADIATION INDUCED DEGRADATION OF SODIUM ALGINATE. [J]. Journal of Radiation Research and Radiation Processing 21(3):169-173(2003)
DOI：

FU Haiying, YAO Side, WU Guozhong. RADIATION INDUCED DEGRADATION OF SODIUM ALGINATE. [J]. Journal of Radiation Research and Radiation Processing 21(3):169-173(2003) DOI：

摘要

采用γ射线辐照、激光光解和脉冲辐解技术，就海藻酸钠水溶液分子量与辐照剂量的关系，SO,4,•–,氧化切断海藻酸钠C,1,−O−C,4,键的机理开展研究。探索了海藻酸钠辐射降解规律，推导其在γ 射线照射下的降解，主要由水辐解产物羥基自由基进攻其C,1,−O−C,4,键，导致链断裂引起的。

Abstract

Reaction rate constants of sodium alginate with both sulfate and carbonate anion radicals were determined by laser flash photolysis and pulse radiolysis, respectively. The relationship between molecular weight of the sodium alginate and absorbed dose was discussed. Degradations of the sodium alginate were caused by OH,•, radicals and other oxidative radicals, because the oxidation at the C-4 carbon resulted in the breakage of the glycosidic C,1,-O-C,4, bond in the main chain of sodium alginate.

关键词

海藻酸钠激光光解脉冲辐解降解

Keywords

Sodium alginatePulse radiolysisLaser photolysisRadiation

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