Journal
CHEMICAL ENGINEERING JOURNAL
Volume 289, Issue -, Pages 1-6Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.12.026
Keywords
Oil sorption; Superhydrophobicity; Polydimethylsiloxane; Absorbent cotton; Kapok
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Funding
- National Research Foundation (NRF) of Korea - Korean government (MEST) [2015R1A2A2A01003866]
- National Research Foundation of Korea [2015R1A2A2A01003866] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Hydrophobic SiO2 nanoparticles were prepared by depositing polydimethylsiloxane (PDMS) on SiO2. By dip-coating a solution of PDMS-coated SiO2 and adhesives dissolved in hexane, cotton and kapok surfaces were modified. The dip-coated cotton and kapok showed high repellency towards water with a water contact angle exceeding 150 degrees. High selectivity towards oil sorption from oil/water mixture was also achieved. The dip-coated cotton and kapok were shown to be able to absorb a quantity of oil similar to 20-60 times their own weight, depending on the type of oil. It was also demonstrated that the absorbed oil can be mechanically extracted from the absorbent and the absorbent can be reused. (C) 2015 Elsevier B.V. All rights reserved.
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