Biodegradation of poly-ε-caprolactone under controlled composting conditions
Biodegradation of poly-ε-caprolactone under controlled composting conditions
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DOI：
10.1016/s0141-3910(97)00238-3
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发表时间：
1998-01-01
影响因子：
5.9
通讯作者：
Nakasaki, K
中科院分区：
文献类型：
--
作者：
Ohtaki, A;Sato, N;Nakasaki, K
通过测量当塑料不与成熟堆肥（如传统方法）混合，而是在受控条件下与用作模型新鲜废物的狗粮混合时的CO2释放来检查可生物降解塑料聚-ε-己内酯（PCL）的生物降解性。实验室堆肥条件。从其中PCL与狗粮以各种比例混合的堆肥中，发现PCL分解的量（计算为在存在和不存在PCL的情况下的CO2释放量的差异）与PCL混合水平成比例。因此证实，在本实验中使用的混合比内，PCL与狗粮的混合几乎没有表现出任何促进或抑制狗粮本身分解的效果（以干重计少于33%）因此，在存在和不存在生物可降解塑料的情况下释放的CO2的量的差异可以被认为是相关的CO2释放量与PCL的分解有关，即PCL的分解量。PCL分解的百分比，这是计算为PCL分解的混合水平的PCL的量的比率，是84%，11天后，在堆肥中使用狗食，但59%，在同一时期后，使用成熟的堆肥。因此，它被证实，更高的PCL分解率是通过混合PCL与新鲜的废物比通过混合它与成熟的堆肥。(C)1998年爱思唯尔科学有限公司。All rights reserved.
The biodegradation of the biodegradable plastic poly-epsilon-caprolactone(PCL) was examined by measuring the release of CO2 when the plastic was mixed not with matured compost, as in the conventional method, but with dog food used as a model fresh waste under controlled laboratory composting conditions. From the composting in which the PCL was mixed with the dog food at various ratios, it was found out that the quantity of PCL decomposition, calculated as the difference in the quantity of CO2 evolution in the presence and absence of PCL, was in proportion to the PCL mixing level. It was thus confirmed that the mixing of PCL to the dog food scarcely exhibited any effect of promoting or inhibiting the decomposition of the dog food itself within the mixing ratio employed in this experiment (less than 33% on a dry weight basis) and thus the difference in the quantities of CO2 evolved in the presence and absence of the biodegradable plastic could be regarded as the quantity of CO2 evolution in association with the decomposition of PCL, i.e. the quantity of PCL decomposition. The percentage of PCL decomposition, which is calculated as a ratio of the quantity of PCL decomposition to the mixing level of PCL, was 84% after 11 days in the composting using dog food, but was 59% after the same period using matured compost. Therefore, it was confirmed that a higher PCL decomposition rate was achieved by mixing PCL with fresh waste than by mixing it with the matured compost. (C) 1998 Elsevier Science Limited. All rights reserved.