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首页> 美国卫生研究院文献>Materials >Environmental Impact of Food Packaging Materials: A Review of Contemporary Development from Conventional Plastics to Polylactic Acid Based Materials
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Environmental Impact of Food Packaging Materials: A Review of Contemporary Development from Conventional Plastics to Polylactic Acid Based Materials

机译：食品包装材料的环境影响：对传统塑料对聚乳酸材料的综述

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摘要

Plastics have remained the material of choice, and after serving their intended purpose, a large proportion ends up in the environment where they persist for centuries. The packaging industry is the largest and growing consumer of synthetic plastics derived from fossil fuels. Food packaging plastics account for the bulk of plastic waste that are polluting the environment. Additionally, given the fact that petroleum reserves are finite and facing depletion, there is a need for the development of alternative materials that can serve the same purpose as conventional plastics. This paper reviews the function of packaging materials and highlights the future potential of the adoption of green materials. Biopolymers have emerged as promising green materials although they still have very low market uptake. Polylactic acid (PLA) has emerged as the most favoured bioplastic. However, it is limited by its high cost and some performance drawbacks. Blending with agricultural waste and natural fillers can result in green composites at low cost, low greenhouse gas emissions, and with improved performance for food packaging applications. The continent of Africa is proposed as a rich source of fibres and fillers that can be sustainably exploited to fabricate green composites in a bid to achieve a circular economy.
机译：塑料仍然是首选的材料，并且在服务预期目的之后，大部分最终在他们持续世纪以来的环境中。包装行业是来自化石燃料的合成塑料的最大和越来越多的消费者。食品包装塑料占污染环境的大部分塑料废物。另外，鉴于石油储备是有限且面向耗尽的事实，需要开发可用作常规塑料的相同目的的替代材料。本文综述了包装材料的功能，突出了采用绿色材料的未来潜力。虽然它们仍然具有很低的市场摄取，但生物聚合物是有前途的绿色材料。聚乳酸（PLA）被出现为最有利的生物塑料塑料。但是，它受其高成本和一些性能缺点的限制。与农业废物和天然填充物混合可导致低成本，低温室气体排放量的绿色复合材料，并改善食品包装应用的性能。非洲大陆被提议作为丰富的纤维和填料来源，可以可持续地利用以制造竞标的绿色复合材料，以实现循环经济。

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