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Biobased, biodegradable and compostable plastics: chemical nature, biodegradation pathways and environmental strategy

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Abstract

Increasing pollution of plastic waste is one of the major global environmental threats, deteriorating our land, water and air. The shift towards biobased, biodegradable and compostable plastics is considered a green alternative to petroleum-based plastic due to its renewable source or biodegradability. However, there is a misconception about biodegradable plastics and their degradability and behaviour after service life. Biobased, biodegradable and compostable plastics offer various benefits such as less carbon footprint, energy efficiency, independence and eco-safety. On the other hand, there are some disadvantages such as higher cost, limited recycling, misuse of terms and lack of legislation. Also, there is an urgent need for comparable international standard methods to define these materials as biodegradable material, or biocompostable material. There are some standards currently available, however, an in-depth detail and explanation of these standards is still missing. This review outlines the basic definition and chemical structure of biobased, biodegradable and compostable plastics; describes the degradation pathways of biodegradable and compostable plastics; and summarises current key applications of these materials together with possible future applications in different industries. Finally, strategies are developed for minimising the environmental impacts and the need for future research is proposed.

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Authors and Affiliations

  1. Australian Rivers Institute and School of Environment and Science, Griffith University, Nathan Campus, Brisbane, QLD, 4111, Australia

    Sabzoi Nizamuddin & Chengrong Chen

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  1. Sabzoi Nizamuddin
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  2. Chengrong Chen
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Chen conceived the review idea, searched the literature, prepared the outlines and revised the manuscript; Nizamuddin collected and analysed the data from the literature and drafted the manuscript. Authors read and approved the final manuscript.

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Correspondence to Chengrong Chen.

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Nizamuddin, S., Chen, C. Biobased, biodegradable and compostable plastics: chemical nature, biodegradation pathways and environmental strategy. Environ Sci Pollut Res 31, 8387–8399 (2024). https://doi.org/10.1007/s11356-023-31689-w

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