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https://hdl.handle.net/20.500.13091/2447
Title: | Development of surface modified PU foam with improved oil absorption and reusability via an environmentally friendly and rapid pathway | Authors: | Seah, Mei Qun Ng, Zhi Chien Lau, Woei Jye Gürsoy, Mehmet Karaman, Mustafa Wong, Tuck-Whye Ismail, Ahmad Fauzi |
Keywords: | Oil absorption PU foam Green approach Hydrophobic Plasma Chemical-Vapor-Deposition Polyurethane Sponge Facile Method Graphene Removal |
Publisher: | Elsevier Sci Ltd | Abstract: | Although the commercial polyurethane (PU) foams are hydrophobic in nature, they generally show low degree of reusability for oil and organic solvent absorption. In this work, we proposed a solvent-free and rapid surface functionalization approach based on chemical vapor deposition (CVD) process to improve the surface characteristics of PU foam, increasing not only its reusability but also its absorption capacity. Among the monomers used to functionalize the surface of foam, our results showed that only hexamethyldisiloxane (HMDSO) and 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA) were promising to increase the absorption performance of the control PU foam, owing to the enhanced foam's surface hydrophobicity (with contact angle increased from similar to 106 degrees to 120-135 degrees) without altering the foam's porosity. These promising features are attributed to the formation of ultrathin highly hydrophobic yet uniform layer on the foam surface. Further investigation indicated that the modified foams outperformed the control foam for the multicycle cyclohexane and crude oil absorption (up to 10 cycles) by showing significantly higher absorption capacity. The reusability of the modified foams could be further improved when ethanol was employed to rinse the saturated foam after each absorption cycle. Such solvent rinsing help in maintaining the foam absorption capacity. In conclusion, the proposed greener surface modification method clearly demonstrated its effectiveness in functionalizing the PU foam, leading to higher absorption capacity against cyclohexane and crude oil as well as higher degree of reusability. | URI: | https://doi.org/10.1016/j.jece.2021.106817 https://hdl.handle.net/20.500.13091/2447 |
ISSN: | 2213-2929 2213-3437 |
Appears in Collections: | Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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1-s2.0-S2213343721017942-main.pdf Until 2030-01-01 | 6.79 MB | Adobe PDF | View/Open Request a copy |
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