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. 2018 May 28;10(6):592. doi: 10.3390/polym10060592

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The adsorption behavior of cellulose-g-PNIPAAm paper in an oil/water mixture at 25 °C (a) and 50 °C (b), respectively. The inset of the top and bottom display the oil-in-water mixtures and water-in-oil mixtures, respectively. The paper pretreated with solutions of the oil layer (dyed red) on the water surface is shown in the top; the bottom shows the water droplet (dyed blue) under the oil; while there is depiction of the desorption behavior of the oil containing cellulose-g-PNIPAAm paper in 25 °C water (c).