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@INPROCEEDINGS{Adeleh:1022158,
      author       = {Adeleh, Sara and Pütz, Thomas and Bol, Roland},
      title        = {{S}ynthesis of {C}14-labeled bioplastics for environmental
                      fate assessments},
      reportid     = {FZJ-2024-01279},
      year         = {2023},
      abstract     = {Due to ever increasing problems in waste management
                      associated with conventional fuel-based plastics, the use of
                      degradable alternative materials appears to be one of the
                      most promising approaches to help prevent the excessive
                      environmental pollution caused by fuel-based plastics
                      disposal and accumulation.Most of the information about
                      polymer degradation is primarily based on traditional
                      plastics. While various reaction mechanisms and pathways are
                      established for some plastics, the effects of environmental
                      factors such as microorganisms, weathering, pH, water, and
                      structural characteristics on the rate and final level of
                      degradation for many bioplastics are not yet properly known.
                      In environmental fate studies, it also remains uncertain
                      whether polymers introduced into more complex matrices
                      undergo physical breakdown into micro- or nanoparticles or
                      simply transform into carbon dioxide, water, or microbial
                      biomass, especially when degradation is slow.The selective
                      labeling of carbon atoms within the polymer backbone,
                      available in both 14C and its stable isotope variant, 13C,
                      has simplified the interpretation of degradation studies.
                      The need to study the fate of bioplastics prompted us to
                      design a synthesis route, starting from C14-labeled lactic
                      acid monomers, transitioning through lactide as an
                      intermediate, and finally culminating in the production of
                      poly 14C-lactic acid chains via a catalytic ring-opening
                      polymerization reaction. Subsequently, after bioplastics
                      conversion into microplastics, these selectively
                      radiolabeled micro-bioplastics are employed for a
                      degradation study in soils under defined conditions.
                      Enhanced understanding of the fate of bioplastics can be
                      achieved by tracking introduced 14C-labeled microplastics in
                      soil up to their ultimate transformation into 14CO2, as a
                      key main degradation product.In this poster, I will present
                      a synthesis procedure and a setup that we want to use for
                      14C-labelled poly lactic acid production which subsequent
                      will be used for degradation studies in soil environment},
      month         = {Dec},
      date          = {2023-12-06},
      organization  = {Towards a Sustainable Bioeconomy –
                       Resources, Utilization, Engineering and
                       AgroEcosystems - Fall meeting Topic 7,
                       Juelich (Germany), 6 Dec 2023 - 8 Dec
                       2023},
      subtyp        = {Other},
      cin          = {IBG-3},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/1022158},
}