Sustainability assessment of denim fabric made of PET fiber and recycled fiber from postconsumer PET bottles using LCA and LCC approach with the EDAS method.

This article focuses on evaluating the environmental and economic sustainability of denim fabric production using recycled polyethylene terephthalate (PET) fiber compared to conventional PET and cotton fibers. Eight scenarios combining different proportions of cotton, conventional PET, and recycled PET fibers were assessed through life cycle assessment (LCA), life cycle costing (LCC), and the evaluation based on distance from average solution (EDAS) multicriteria decision-making method. Results indicate that using 100% recycled PET fiber with the cut-off allocation method yields the most favorable environmental outcomes, notably reducing global warming potential, stratospheric ozone depletion, and ionizing radiation impacts, while conventional PET fiber shows the lowest economic cost. The study highlights that the choice of allocation method significantly influences the perceived environmental benefits of recycled materials and underscores the importance of integrating both environmental and economic criteria in sustainable textile production decisions.