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Bio-based FRP composites and their circularity potential: Options for environmental assessment

The usage of bio-based materials to substitute fossil resource-based ones, as well as circular economy principles, are gaining importance under the sustainability paradigm (Ramesh 2019). Complex bio-based materials, such as natural fiber reinforced polymer (NFRP) composites, require an environmental life cycle assessment (LCA) to critically assess and verify the anticipated ecological benefit associated with the usage of renewable materials and their recyclability prospects (Andrew & Dhakal 2022). LCA can serve to identify hotspots and optimization measures within the value chain concerning raw material sourcing, transportation, and adaptation of manufacturing processes. Other important roles in the ecological performance evaluation of NFRP composites are the consideration of substitution potentials of the bio-based materials in respective industries and repair and recycling prospects (Zhao et al. 2022).

Bio-based fiber reinforced polymer composites are an emerging field of interest under the sustainability paradigm. The QB3R project investigates several aspects, such as vitrimer resin development, composite manufacturing, repair, and recycling prospects. This paper presents different options to analyze the environmental benefits associated with bio-based materials and their circularity via Life Cycle Assessment. These approaches are evaluated in regards to scientific and project relevance, as well as feasibility and data requirements. Most interesting and feasible are the assessment of the bio-based system, a comparison of different processing technologies, and the repair to prolong component lifetime. Potential environmental benefits of the latter depend primarily on efforts needed to repair and the prolonged lifetime of the composite. Pursuing three approaches allows investigating specific aspects and simultaneously creating a bigger picture of the environmental performance of the developing field of bio-based FRP composites.

Copyright:	© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle:	Recy & Depotech 2022 (November 2022)
Seiten:	4
Preis:	€ 2,00
Autor:	Ulrike Kirschnick Dr. mont. Dipl.-Ing. Hannes Kern R. Schledjewski
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