June 30, 2021 Journal article Open Access

Olivia A. Attallah; Marija Mojicevic; Eduardo Lanzagorta Garcia; Muhammad Azeem; Yuanyuan Chen; Shumayl Asmawi; Margaret Brenan Fournet

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    <subfield code="a">&lt;p&gt;On a score sheet for plastics, bioplastics have a medium score for combined mechanical performance and a high score for biodegradability with respect to counterpart petroleum-based plastics. Analysis quickly confirms that endeavours to increase the mechanical performance score for bioplastics would be far more achievable than delivering adequate biodegradability for the recalcitrant plastics, while preserving their impressive mechanical performances. Key architectural features of both bioplastics and petroleum-based plastics, namely, molecular weight (M&lt;sub&gt;w&lt;/sub&gt;) and crystallinity, which underpin mechanical performance, typically have an inversely dependent relationship with biodegradability. In the case of bioplastics, both macro and micro strategies with dual positive correlation on mechanical and biodegradability performance, are available to address this dilemma. Regarding the macro approach, processing using selected fillers, plasticisers and compatibilisers have been shown to enhance both targeted mechanical properties and biodegradability within bioplastics. Whereas, regarding the micro approach, a whole host of bio and chemical synthetic routes are uniquely available, to produce improved bioplastics. In this review, the main characteristics of bioplastics in terms of mechanical and barrier performances, as well as biodegradability, have been assessed&amp;mdash;identifying both macro and micro routes promoting favourable bioplastics&amp;rsquo; production, processability and performance.&lt;/p&gt;</subfield>
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    <subfield code="a">Macro and Micro Routes to High Performance Bioplastics: Bioplastic Biodegradability and Mechanical and Barrier Properties</subfield>
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