当前位置: X-MOL 学术Radiat. Phys. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Chemiluminescence study on the radiochemical stability of polypropylene modified with microalgal extracts
Radiation Physics and Chemistry ( IF 2.9 ) Pub Date : 2021-02-21 , DOI: 10.1016/j.radphyschem.2021.109401
Carmen Mateescu , Traian Zaharescu , Marius Mariş

The stabilization effects of Chlorella vulgaris (Ch) and Spirulina platensis (Sp) powders on polypropylene (PP) are investigated by isothermal and nonisothermal chemiluminescences on the degrading samples by γ-irradiation. The antioxidative protection activities were evaluated on PP containing 1 wt% additive. The antioxidant characteristics on these microalgae are discussed in respect with the progress of oxidation after γ-exposure at 25, 50 and 100 kGy. The degradation protectors Chlorella vulgaris and Spirulina platensis are efficient stabilization agents even at high doses, when the effectiveness of Spirulina platensis exceeds the effects induced by Chlorella vulgaris. The activation energies required to the delay of oxidation were calculated at various radiolysis degrees. The degradation achieved by thermal or radiochemical ageing is hindered by the polyphenols, which are biocompatible with human body. The contributions of the studied natural additives may be considered as a proper solution for the protection of polymers subjected to radiation sterilization or processing. The present study proposes optimal conditions for application of algal extracts in the food handling and medical wear.



中文翻译:

化学发光法研究微藻提取物改性聚丙烯的放射化学稳定性

通过等温和非等温化学发光法研究了小球藻Chlorella vulgaris,Ch)和螺旋藻Spirulina platensis,Sp)粉对聚丙烯(PP)的稳定作用。在含有1重量%添加剂的PP上评估抗氧化保护活性。讨论了在25、50和100 kGyγ暴露后氧化过程中这些微藻的抗氧化特性。当螺旋藻的功效超过寻常小球藻诱导的效果时,即使在高剂量下,降解保护剂小球藻螺旋藻也是有效的稳定剂。。在各种辐射分解度下计算了延迟氧化所需的活化能。与人体生物相容的多酚阻碍了通过热老化或放射化学老化实现的降解。被研究的天然添加剂的贡献可以被认为是用于保护经受辐射灭菌或加工的聚合物的合适解决方案。本研究提出了藻类提取物在食品处理和医疗服装中应用的最佳条件。

更新日期:2021-03-01
down
wechat
bug