| Autor: |
Ko Y; Fiber Science Program, Department of Human Centered Design, Cornell University, Ithaca, New York 14853, United States., Uyar T; Fiber Science Program, Department of Human Centered Design, Cornell University, Ithaca, New York 14853, United States., Hinestroza JP; Fiber Science Program, Department of Human Centered Design, Cornell University, Ithaca, New York 14853, United States. |
| Jazyk: |
angličtina |
| Zdroj: |
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2024 Oct 02; Vol. 16 (39), pp. 53163-53176. Date of Electronic Publication: 2024 Sep 21. |
| DOI: |
10.1021/acsami.4c10459 |
| Abstrakt: |
We report on a method for synthesizing superhydrophobic coatings using a UiO-66 metal-organic framework (MOF) with discarded polyester/Spandex fabrics as raw materials. Unlike traditional recycling techniques that involve separating non-poly(ethylene terephthalate) (PET) components, our approach directly uses blended polyester/Spandex fibers. Discarded polyester/Spandex fabrics were exposed to an alkaline depolymerization process to produce disodium terephthalate (Na 2 BDC), which is a known linker for UiO-66 synthesis. We conducted experiments under two different conditions involving different amounts of ethanol. We found that with a small amount of ethanol, the resulting UiO-66 structure, when assembled on top of a polyester/Spandex substrate, exhibited a water contact angle of ≥150°─a superhydrophobic behavior. When using larger amounts of ethanol, we noted a hydrophobic behavior with a water contact angle of ∼139°. As a control, we performed the same experiments but using discarded 100% polyester fabrics as raw materials, which resulted in a superhydrophilic behavior. We attribute the superhydrophobic behavior of the UiO-66 coatings, produced from the polyester/Spandex fabrics, to the presence of hydrophobic compounds generated by the chemical degradation of Spandex. Our approach introduces a pathway for upcycling discarded textiles into superhydrophobic coatings. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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