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| Home > Publications database > Environmental Behavior and Fate of 14C-Polylactic Acid in Temperate Soils |
| Poster (Other) | FZJ-2024-06413 |
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2024
Abstract: With global plastic production continuing to increase multiple efforts are underway to shifttowards a more circular bioeconomy model. Bioplastics, derived from renewable sources, areemerging as alternatives to traditional plastics. These bioplastics offer the potential to reduceCO footprints and dependence on fossil fuels. However, challenges remain in their overallrecycling and their fate in the natural environment.Plastic degradation studies are complex and challenging due to the multitude of factorsinvolved, including variable polymer properties and environmental conditions. Reliableevaluation of degradation requires precise measurement and control of these factors. Variousanalytical techniques such as optical detection, spectroscopy, and thermal analysis have beenused to study degradation processes, but they often have limitations, especially when dealingwith relatively slow degradation in more complex environments like soil.Carbon-14 ( C) is a radioactive isotope widely used in scientific research, particularly in fatestudies. This technique offers a solution, allowing researchers to track the mobility of selectivepolymers and gain insights into their decomposition pathways. Biodegradation studiescommonly measure only evolved overall soil emitted CO . Using polymers labelled with radioisotopes, it is possible to accurately distinguish between carbon dioxide produced duringpolymer degradation and other carbon sources in complex environments. This allows for moreprecise interpretation of results, making radio tracking an invaluable tool in plastic degradationresearch. It also provides valuable data in understanding plastic decomposition processes,enables further development of biodegradable polymers, and better waste and recyclingmanagement strategies.Limited studies in the field of biodegradation of plastics in the natural environment, especiallysoil, have encouraged us to initiate a degradation study for one of the most widely usedbioplastics. We are developing a new synthesis procedure to produce biodegradable Clabeled Polylactic acid polymers. It involves a ring-opening polymerization reaction using a Znbased catalyst on a laboratory scale. Subsequently, the synthesized C labeled polymer will beutilized for multiple degradation and leaching studies in temperate soil profiles.
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