Dr.-Ing.

Albrecht, Stefan

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  • Publication
    Sustainable Pultruded Sandwich Profiles with Mycelium Core
    ( 2023-07-28)
    Früchtl, Marion
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    Senz, Andreas
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    Sydow, Steffen
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    Frank, Jonas Benjamin
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    Hohmann, Andrea
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    Albrecht, Stefan orcid-logo
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    Fischer, Matthias orcid-logo
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    Holland, Maximilian
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    Wilhelm, Frederik
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    Christ, Henrik-Alexander
    This research focuses on exploring the potential of mycelium as a sustainable alternative to wood or solid foam in pultruded glass fiber-reinforced plastic (GFRP) sandwich profiles. The study evaluates the performance and the environmental sustainability potential of this composite by mechanical tests and life cycle assessment (LCA). Analysis and comparison of pultruded sandwich profiles with mycelium, polyurethane (PUR) foam and chipboard demonstrate that mycelium is competitive in terms of its performance and environmental impact. The LCA indicates that 88% of greenhouse gas emissions are attributed to mycelium production, with the heat pressing (laboratory scale) being the main culprit. When pultruded profiles with mycelium cores of densities 350 and 550 kg/m 3 are produced using an oil-heated lab press, a global warming potential (GWP) of 5.74 and 9.10 kg CO 2-eq. per functional unit was calculated, respectively. When using an electrically heated press, the GWP decreases to 1.50 and 1.78 kg CO 2-eq. Compared to PUR foam, a reduction of 23% in GWP is possible. In order to leverage this potential, the material performance and the reproducibility of the properties must be further increased. Additionally, an adjustment of the manufacturing process with in situ mycelium deactivation during pultrusion could further reduce the energy consumption.
  • Publication
    Reusable Plastic Crates vs. Single-Use Cardboard Boxes
    ( 2022)
    Albrecht, Stefan orcid-logo
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    Bertling, Jürgen orcid-logo
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    Fischer, Matthias orcid-logo
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    Gehring, Florian orcid-logo
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    Kabasci, Stephan orcid-logo
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    Prescher, Tim
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    Schulte, Anna orcid-logo
    A.: Reusable plastic crates vs. single-use cardboard boxes-two packaging systems in competition, Oberhausen/Stuttgart 2022.
  • Publication
    Mehrwegsteige aus Kunststoff vs. Einwegkarton aus Pappe
    ( 2022)
    Albrecht, Stefan orcid-logo
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    Bertling, Jürgen orcid-logo
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    Fischer, Matthias orcid-logo
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    Gehring, Florian orcid-logo
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    Kabasci, Stephan orcid-logo
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    Prescher, Tim
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    Schulte, Anna orcid-logo
    Weg vom Kunststoff hin zu Papier, Karton oder Pappe - wie nachhaltig ist der neue Verpackungstrend? In diesem Bericht erläutern das Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT und das Fraunhofer-Institut für Bauphysik IBP im Auftrag der Stiftung Initiative Mehrweg (SIM) Hintergründe und Zusammenhänge zu ökologischen Wirkungen des Einwegkartons und der Kunststoff-Mehrwegsteige. Ein darauf aufbauender genereller Diskurs zum Thema Einweg vs. Mehrweg soll Akteuren der Politik Hilfestellung geben, die richtigen Weichen für eine funktionierende Kreislaufwirtschaft der Zukunft zu stellen.