Recent Progress of Polyurethane-Based Materials for Oil/Water Separation

Guo, Gailan; Liu, Libin; Dang, Zhao; Fang, Wenyuan

doi:10.1142/s1793292017300018

Cited by 17 publications

(5 citation statements)

References 85 publications

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“…However, some of these materials have the disadvantages of low sorption capacity, complex fabrication process, secondary pollution, poor mechanical property and poor oil–water selectivity. − At present, oil absorbents have received significant attention for efficient cleanup and recovery of the spilled oil because they are not only capable of absorbing and holding oil pollutants in place due to their matrix structures, but also making it possible to recover the oil subsequently from their semisolid phase. Therefore, porous foam materials are particularly used as a substrate in developing cost-effective and high-performance oil sorbents. − …”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyurethane Foams Loaded with TiO₂ Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

Qian

Oribayo

Feng

et al. 2018

Ind. Eng. Chem. Res.

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Sponge-like superhydrophobic and superoleophilic materials are attracting significant attention for effective cleanup and recovery of spilled oils from water. We report on the synthesis of TiO2 nanoparticle/polyurethane (TPU) composite foam substrate and its surface modification with tetradecylamine (TDA)-amidated graphene oxide (GO-TDA), thereby forming superhydrophobic and superoleophilic TPU-GO-TDA sorbent for oil spill clean-ups. Spectroscopic analyses confirmed that TDA was successfully grafted onto GO and the reduced GO by TDA was successfully grafted onto the TPU foam. Sorption experiments with engine oil, crude oil, silicone oil, and chloroform demonstrated that the TPU-GO-TDA foam was an effective sorbent with sorption capacity of 20.2–62.4 times its own weight. The absorbed oils in the sorbent could be recovered simply by squeezing the oil-laden foam. The much higher selectivity to oils and better reusability of the TPU-GO-TDA foam than commercial sorbents make the TPU-GO-TDA foam promising for the separation and recovery of spilled oils and organic solvents from water.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Polyurethane Foams Loaded with TiO₂ Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

Qian

Oribayo

Feng

et al. 2018

Ind. Eng. Chem. Res.

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“…However, the modification of PU foam is very similar to that of the MA foam; but the results are not the same for the two modified foams. In this section of the review, different modifications of PU foam are discussed, and the efficiencies are compared with that of MA foam [ 60 ]. Taking the advantage of dopamine deposition by polymerization of all substrates, Li et al [ 61 ] fabricated superhydrophobic durable foam through the modification of PU with dopamine, Ag NPs and dodecylmercaptan (DM).…”

Section: Characterizations Of the Foamsmentioning

confidence: 99%

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

Hailan¹,

Ponnamma²,

Krupa³

2021

Polymers

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Melamine (MA) and polyurethane (PU) foams, including both commercial sponges for daily use as well as newly synthesized foams are known for their high sorption ability of both polar and unipolar liquids. From this reason, commercial sponges are widely used for cleaning as they absorb a large amount of water, oil as well as their mixtures. These sponges do not preferentially absorb any of those components due to their balanced wettability. On the other hand, chemical and physical modifications of outer surfaces or in the bulk of the foams can significantly change their original wettability. These treatments ensure a suitable wettability of foams needed for an efficient water/oil or oil/water separation. MA and PU foams, dependently on the treatment, can be designed for both types of separations. The particular focus of this review is dealt with the separation of oil contaminants dispersed in water of various composition, however, an opposite case, namely a separation of water content from continuous oily phase is also discussed in some extent. In the former case, water is dominant, continuous phase and oil is dispersed within it at various concentrations, dependently on the source of polluted water. For example, waste waters associated with a crude oil, gas, shale gas extraction and oil refineries consist of oily impurities in the range from tens to thousands ppm [mg/L]. The efficient materials for preferential oil sorption should display significantly high hydrophobicity and oleophilicity and vice versa. This review is dealt with the various modifications of MA and PU foams for separating both oil in water and water in oil mixtures by identifying the chemical composition, porosity, morphology, and crosslinking parameters of the materials. Different functionalization strategies and modifications including the surface grafting with various functional species or by adding various nanomaterials in manipulating the surface properties and wettability are thoroughly reviewed. Despite the laboratory tests proved a multiply reuse of the foams, industrial applications are limited due to fouling problems, longer cleaning protocols and mechanical damages during performance cycles. Various strategies were proposed to resolve those bottlenecks, and they are also reviewed in this study.

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“…Currently, an increasing amount of research is focusing on oil/water separation because of the increasing prevalence of oily wastewater and frequently occurring oil leakage accidents [ 1 , 2 ]. To date, various techniques, including in situ burning [ 3 ], air flotation [ 4 ], electrical/chemical coalescence [ 5 ], absorption [ 6 ], and membrane separation [ 7 ], have been developed for oily water disposal.…”

Section: Introductionmentioning

confidence: 99%

Clay-Coated Meshes with Superhydrophilicity and Underwater Superoleophobicity for Highly Efficient Oil/Water Separation

Yang

Zhen

et al. 2023

Materials

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A novel clay-coated mesh was fabricated via a simple brush-coating method without the use of special equipment, chemical reagents, and complex chemical reactions and operation processes. Possessing superhydrophilicity and underwater superoleophobicity, the clay-coated mesh can be used for efficiently separating various light oil/water mixtures. The clay-coated mesh also exhibits excellent reusability, maintaining a high separation efficiency of 99.4% after 30 repeated separations of the kerosene/water mixture.

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Recent Progress of Polyurethane-Based Materials for Oil/Water Separation

Cited by 17 publications

References 85 publications

Synthesis of Polyurethane Foams Loaded with TiO₂ Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

Synthesis of Polyurethane Foams Loaded with TiO₂ Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

Clay-Coated Meshes with Superhydrophilicity and Underwater Superoleophobicity for Highly Efficient Oil/Water Separation

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Recent Progress of Polyurethane-Based Materials for Oil/Water Separation

Cited by 17 publications

References 85 publications

Synthesis of Polyurethane Foams Loaded with TiO2 Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

Synthesis of Polyurethane Foams Loaded with TiO2 Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

Clay-Coated Meshes with Superhydrophilicity and Underwater Superoleophobicity for Highly Efficient Oil/Water Separation

Contact Info

Product

Resources

About

Synthesis of Polyurethane Foams Loaded with TiO₂ Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup

Synthesis of Polyurethane Foams Loaded with TiO₂ Nanoparticles and Their Modification for Enhanced Performance in Oil Spill Cleanup