| 聚乙烯含亚铁离子添加剂膜在堆肥温度下的降解性(英文) |
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| 引用本文： | 黎汉生,于九皋,张敏莲. 聚乙烯含亚铁离子添加剂膜在堆肥温度下的降解性(英文)[J]. 天津大学学报(英文版), 1999, 0(2) |
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| 作者姓名： | 黎汉生 于九皋 张敏莲 |
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| 作者单位： | 天津大学化工学院(黎汉生，张敏莲)，天津大学理学院(于九皋) |
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| 摘 要： | 研究了聚乙烯添加剂膜(添加剂主要含油酸和亚铁离子)在模拟堆肥温度下加速降解性能.采用傅里叶变换红外光谱以及力学性能和粘均分子量的测量对膜的降解性能进行了表征,并讨论了降解机理.结果表明亚铁离子在聚乙烯膜降解过程中起重要作用,促进聚乙烯的降解.
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| 关 键 词： | 聚乙烯 亚铁离子 堆肥 降解 |
STUDY ON DEGRADATION OF POLYETHYLENE FILMS CONTAINING ADDITIVES WITH FERROUS ION AT COMPOSTING TEMPERATURES |
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| Abstract: | Polyethylene (PE) films with additives consisting mainly of oleic acid and ferrous ions were subjected to accelerated degradation at simulated composting temperatures.Based on Fourier transform infrared spectroscopy and measurements of mechanical properties and viscosity average molecular weight,the degradation of the films was characterized and the degradation mechanism was discussed.The films containing additives with ferrous ions represent considerable decreases in molecular weight,and the carbonyl groups and hydroperoxides in the aging films show different trends of increase with the aging time.These results indicate that the ferrous ion plays an important role in the degradation of PE films and accelerates the degradation of PE. |
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| Keywords: | polyethylene ferrous ion composting degradation |
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