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Modeling marine microplastic emissions in Life Cycle Assessment: characterization factors for biodegradable polymers and their application in a textile case study
Summary
Researchers developed new methods for measuring the environmental impact of biodegradable plastic microplastic emissions using life cycle assessment. They found that microplastic degradation rates may be overestimated when based on data from larger plastic pieces, and that microplastic emissions could account for up to 30% of the total environmental impact in a textile case study. The work aims to improve the accuracy of environmental comparisons between conventional and biodegradable materials.
Comparing the resulting specific surface degradation rates indicates that microplastic degradation rates could be overestimated when using macroplastic degradation data. Pertaining to the case study, the results show that the impact on ecosystem quality by microplastic emissions could account for up to 30% of the total endpoint category. Overall, this work aims to foster interdisciplinary collaboration to leverage the accuracy of LCA studies and thus provide guidance for novel material development.