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Environmental impact of chicken feathers based polypropylene composites developed for automotive and stationary applications and comparison with glass-fibre analogues Álvarez del Castillo, María Dolores Garrido Soriano, Núria Casadesús Fusté, Marta Macanás de Benito, Jorge Molins Duran, Gemma Carrillo Navarrete, Fernando Universitat Politècnica de Catalunya. Departament d'Enginyeria Química Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials Universitat Politècnica de Catalunya. Doctorat en Sostenibilitat Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient Universitat Politècnica de Catalunya. SUMMLab - Sustainability Measurement and Modeling Lab Universitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos Composite materials Automobile industry and trade Product life cycle Waste products Chicken feathers Biocomposites Biogenic waste Life cycle assessment Automotive sector Materials compostos Automòbils -- Indústria i comerç Cicle de vida del producte Residus In last decades, there has been an interest in using biogenic wastes and by-products as fillers or reinforcements to produce polymer composites. Hence, new composites materials based on a blend of biogenic chicken feathers (CFs) and polypropylene (PP) are proposed in this work and compared, from the environmental point of view, with currently used materials as neat PP and PP reinforced with glass-fibres (PP-GF). A Cradle-to-Grave Life Cycle Assessment (LCA) was performed in order to compare the environmental impact of these three materials when being used either for automotive or stationary applications. The mechanical properties of each material were taken into account to calculate the equivalent mass of each industrial application and the use phase and end of life (EoL) were included in the LCA study. The results showed that, for automotive applications and for all the materials studied (PP-GF, PP-CFs and PP) the use phase has a great contribution to the environmental impact categories considered, proving that the new developed material based on CFs (PP-CFs) would be appropriate for stationary applications but not for mobile applications as automotive ones. In addition, the EoL scenario considered, i.e. incineration with energy recovery, has proven to provide extra environmental credits Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was funded by the Spanish Ministerio de Economía y Competitividad. Project ref. MAT2015-65392-C2-1-R (MINECO/FEDER) Postprint (published version) 2022-05-31 Article Alvarez, M.D. [et al.]. Environmental impact of chicken feathers based polypropylene composites developed for automotive and stationary applications and comparison with glass-fibre analogues. "Waste and biomass valorization", 2022, vol. 13, núm. 11, p. 4585-4598. 1877-2641 https://hdl.handle.net/2117/367959 10.1007/s12649-022-01810-0 eng https://link.springer.com/article/10.1007/s12649-022-01810-0 info:eu-repo/grantAgreement/MINECO/1PE/ MAT2015-65392-C2-1-R http://creativecommons.org/licenses/by/4.0/ Open Access Attribution 4.0 International 14 p. application/pdf Springer