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Polymers 2018, 10(10), 1101; https://doi.org/10.3390/polym10101101

Cost-Effective, Highly Selective and Environmentally Friendly Superhydrophobic Absorbent from Cigarette Filters for Oil Spillage Clean up

1
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, China
2
College of Pharmaceutical Engineering, Shaanxi Fashion Engineering University, Xi’an 712046, China
3
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
*
Authors to whom correspondence should be addressed.
Received: 19 September 2018 / Revised: 29 September 2018 / Accepted: 1 October 2018 / Published: 5 October 2018
(This article belongs to the Special Issue Surface Modification and Functional Coatings for Polymers)
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Abstract

Ecological and environmental damage caused by oil spillage has attracted great attention. Used cigarette filters (CF) have also caused negative environmental consequences. Converting CF to economical materials is a feasible way to address these problems. In this study, we demonstrate a simple method for production of a highly hydrophobic absorbent from CF. CF was modified by using different volume ratios of octadecyltrichlorosilane and methyltrimethoxysilane. When the volume ratio was 3:2, the modified CF had the high water contact angle of 155°. It could selectively and completely absorb silicone oil from an oil-water mixture and showed a good absorption capacity of 38.3 g/g. The absorbed oil was readily and rapidly recovered by simple mechanical squeezing, and it could be reused immediately without any additional treatments. The as-obtained superhydrophobic modified CF retained an absorption capacity of 80% for pump oil and 82% for silicone oil after 10 cycles. The modified CF showed good elasticity in the test of repeated use. The present study provides novel design of a functional material for development of hydrophobic absorbents from used CF via a facile method toward oil spillage cleanup, as well as a new recycling method of CF to alleviate environmental impacts. View Full-Text
Keywords: cigarette filter; superhydrophobic; highly selective; absorbent; oil spillage cigarette filter; superhydrophobic; highly selective; absorbent; oil spillage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Xiong, Q.; Bai, Q.; Li, C.; Lei, H.; Liu, C.; Shen, Y.; Uyama, H. Cost-Effective, Highly Selective and Environmentally Friendly Superhydrophobic Absorbent from Cigarette Filters for Oil Spillage Clean up. Polymers 2018, 10, 1101.

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