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首页> 外文期刊>Journal of Polymers and the Environment >Determination of Microorganisms' Attack on Some Flexible Polymers by Using Soil Burial Test Method
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Determination of Microorganisms' Attack on Some Flexible Polymers by Using Soil Burial Test Method

机译：土壤埋藏法测定微生物对某些柔性聚合物的攻击

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摘要

Many controversial issues have recently been associated with plasticized poly(vinyl chloride) (pPVC) used in building applications, mainly for flooring. One of them has to do with the health impact of some plasticizers and thermal stabilizers based on heavy metal compounds. Recent advances in the synthesis of polyolefins based on metallocene catalysts can yield similar flexibility for formulations as is now available for those based on pPVC. Polyolefin copolymers are considered to be possible replacements for pPVC. The soil burial test has demonstrated that highly filled polyolefin elastomer formulations having a significant percentage of post-consumer polyolefins (up to 60% in laboratory conditions) have interesting properties from the biodegradation point of view. They are more resistant to microorganisms' attack than plasticized flooring formulations based on PVC that are currently used, even in a very harsh environment as soil, where complex mixtures of microorganisms are present. The effect of microorganisms' attack after soil burial was evaluated by visual examination, weight loss, water absorption and changes in mechanical properties.
机译：最近，在建筑应用中主要用于地板的增塑聚氯乙烯（pPVC）引发了许多有争议的问题。其中之一与某些基于重金属化合物的增塑剂和热稳定剂对健康的影响有关。基于茂金属催化剂的聚烯烃合成的最新进展可以为配方提供与现在基于pPVC的那些类似的灵活性。认为聚烯烃共聚物可以替代pPVC。土壤掩埋测试表明，从生物降解的角度来看，具有显着百分比的消费后聚烯烃（在实验室条件下高达60％）的高度填充的聚烯烃弹性体配方具有令人感兴趣的特性。它们比目前使用的基于PVC的增塑地板配方对微生物的侵害更具抵抗力，即使是在存在微生物复杂混合物的非常恶劣的土壤环境中也是如此。通过目测，失重，吸水率和机械性能的变化，评估了微生物对土壤埋葬后攻击的影响。

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