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  1. zhang, y., et al. (2020). polyurethane adhesives in footwear industry: a review. journal of materials science and technology, 36(5), 789¨C801.

  2. wang, l., & chen, h. (2021). application of mdi-based polyurethane in sports equipment manufacturing. polymer engineering & science, 61(8), 1987¨C1995.

  3. ag. (2022). technical data sheet: desmodur 3133. retrieved from www..com

  4. smith, j. r., & lee, k. m. (2019). sustainable development of polyurethane for sport products. advanced materials research, 116(3), 210¨C225.

  5. li, x., et al. (2023). environmental impact analysis of solvent-free adhesive systems in shoe manufacturing. green chemistry, 25(2), 345¨C357.

  6. european chemicals agency (echa). (2021). reach regulation and application of mdi compounds. echa publications.

  7. nike sustainability report. (2022). innovations in eco-friendly footwear production. nike inc.

  8. adidas group. (2023). material innovation for high-performance sportswear. adidas corporate reports.


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