| 堆肥温度下多价金属有机化合物对LDPE的催化降解作用 |
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| 引用本文： | 于九泉,陈崧哲.堆肥温度下多价金属有机化合物对LDPE的催化降解作用[J].天津大学学报(英文版),2001,7(4):290-293. |
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| 作者姓名： | 于九泉 陈崧哲 |
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| 作者单位： | 天津大学理学院, |
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| 摘 要： | 研究了多价态元素铁、锡、锰的有机化合物对低密度聚乙烯 ( LDPE)在堆肥温度下的催化降解作用 .通过对降解前后样品的力学性能、分子量、氢过氧化物 ( POOH)浓度进行测试 ,证明所采用的有机金属化合物能有效促进堆肥温度下 PE的降解 .薄膜样品在降解 6 0 d后物性明显劣化 ,粘均分子量大幅度降低 ,而样品内 POOH]的高低能够在一定程度上反映 L DPE降解速度的快慢 ,保持较高 POOH]值的样品降解较快 ;F T-IR和 DSC分析结果表明 ,试样中羰基含量和结晶度均随降解时间的延长而升高 .
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| 关 键 词： | 聚乙烯 多价金属有机化合物 堆肥 降解 氢过氧化物 |
STUDY ON DEGRADATION OF LDPE CATALYZED BY MULTI-VALENCE METALLIC ORGANIC COMPOUNDS AT COMPOST TEMPERATURE |
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| YU Jiu-gao,CHEN Song-zhe.STUDY ON DEGRADATION OF LDPE CATALYZED BY MULTI-VALENCE METALLIC ORGANIC COMPOUNDS AT COMPOST TEMPERATURE[J].Transactions of Tianjin University,2001,7(4):290-293. |
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| Authors: | YU Jiu-gao CHEN Song-zhe |
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| Abstract: | The catalytic effects of the organic compounds of iron,tin and manganese on the degradation of low density polyethylene (LDPE) at compost temperature are discussed.A series of samples were aged in a simulating compost environment.The mechanical properties,viscosity-average molecular weight (Mη) of PE and hydroperoxide (POOH) concentration in the samples were measured.FT-IR and DSC were also applied to characterize some samples.It was shown that the above-mentioned metallic organic compounds can catalyze the degradation of LDPE efficiently.After 2 months aging,all samples with catalysts became fragile and the Mη of the material decreased dramatically.Furthermore,the concentration of carbonyl and the degree of crystallinity of the material increased with the aging time. |
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| Keywords: | polyethylene multi valence metallic organic compound compost degradation hydroperoxide |
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