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首页> 外文期刊>Journal of Polymers and the Environment >PLA and Montmorilonite Nanocomposites: Properties, Biodegradation and Potential Toxicity
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PLA and Montmorilonite Nanocomposites: Properties, Biodegradation and Potential Toxicity

机译：PLA和蒙脱土纳米复合材料：性能，生物降解性和潜在毒性。

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摘要

The concern related to solid waste increases efforts to develop products based on biodegradable materials. At present, PLA has one of the highest potentials among biopolyesters, particularly for packaging. However, its application is limited in some fields. In order to optimize PLA properties, organo-modified montmorilonites have been extensively used to obtain nanocomposites. Although PLA nanocomposites studies are widely reported in the literature, there is still few information about the influence of organoclays on de biodegradation process, which is a relevant information, since one of the main purposals related to the final disposal of biopolymers as PLA is composting. Besides, in the last years some research has been conducted in order to evaluate the potential toxicity of montmorilonite, unmodified or organo-modified. Since the use of montmorilonite is expanding in different applications, human exposure and risk assessment are important issues to be investigated. In this context, this review intends to compile available information related to common organoclays used for PLA nanocomposites, its properties, biodegradation analysis and potential toxicity evaluation of nanocomposites, focused on montmorilonite as filler. Two issues of relevance were pointed out. The first is food safety and quality, and the second consideration is the environmental effect.
机译：与固体废物有关的关注增加了开发基于可生物降解材料的产品的努力。目前，PLA具有生物聚酯中最高的潜力之一，特别是在包装方面。但是，其应用在某些领域受到限制。为了优化PLA性能，有机改性的蒙脱土已被广泛用于获得纳米复合材料。尽管文献中广泛报道了PLA纳米复合材料的研究，但有关有机粘土对生物降解过程的影响的信息仍然很少，这是一个相关信息，因为与PLA最终处理生物聚合物有关的主要目的之一是在堆肥过程中。此外，最近几年进行了一些研究，以评估未改性或有机改性的蒙脱石的潜在毒性。由于蒙脱石的用途正在不同的应用中扩展，因此人体暴露和风险评估是需要研究的重要问题。在这种情况下，本综述旨在汇编与用于PLA纳米复合材料的常见有机粘土有关的可用信息，其性能，生物降解分析以及纳米复合材料的潜在毒性评估，重点是蒙脱土作为填料。指出了两个相关的问题。首先是食品安全和质量，其次是环境影响。

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