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    Super-hydrophobic modification of porous natural polymer "luffa sponge" for oil absorption

    Year: 2017

    Journal: Polymer, Volume 126, SEP 22, page 470–476

    Authors: Wang, Zhe; Ma, Hongyang; Chu, Benjamin; Hsiao, Benjamin S.

    Organizations: SusChEM Program of the National Science Foundation [DMR-1409507]; National Natural Science Foundation of China [51673011]; State Key Laboratory of Organic-Inorganic Composites at Beijing University of Chemical Technology [oic-201503004]; Fundamental Research Funds for the Central Universities [buctrc201501]

    Keywords: Super-hydrophobic; Luffa sponge; Absorption

    A super-hydrophobic porous material with high absorption capability, suitable for oil spill cleanup, was demonstrated using a natural luffa sponge modified by a polyhedral oligomeric silsesquioxane (POSS)based compound. Through facile treatments of surface roughing and POSS coating, the initial hydrophilic luffa sponge was transformed to super-hydrophobic having a water contact angle of 155. The modified luffa sponge could absorb 8 to 12 times of its weight for different types of oils and could be recycled for many times in use. The effects of oil viscosity and sponge pore size on the absorption capacity were investigated; where the absorption selectivity tests revealed that the modified luffa sponge could essentially take up all the components of the oil during the absorption process. (C) 2017 Elsevier Ltd. All rights reserved.
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