Polylactic Acid Nonwoven Fabric Surface Modified with Stereocomplex Crystals for Recyclable Use in Oil/Water Separation

2020 ◽  
Vol 2 (7) ◽  
pp. 2509-2516
Author(s):  
Chenxi Zhu ◽  
Wei Jiang ◽  
Jinglei Hu ◽  
Ping Sun ◽  
Aimin Li ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Nonwoven Fabric ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Surface Modified ◽  
Fabric Surface

Design and fabrication of polydopamine based superhydrophobic fabrics for efficient oil-water separation

Soft Matter ◽  
2021 ◽  
Author(s):  
Jixi Zhang ◽  
Ligui Zhang ◽  
Xiao Gong
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Sol Gel ◽  
High Water ◽  
Water Contact ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Fabric Surface

In this work, we prepare a PDMS-SiO2-PDA@fabric with high water contact angle (WCA=155o). Combining dopamine self-polymerization and sol-gel method, SiO2 is in situ grown on a PDA-modified fabric surface to...

Surface-Modified Nanoporous Membrane for Oil–Water Separation

2022 ◽  
Vol 233 (1) ◽  
Author(s):  
Arthi Karunanithi ◽  
Jyotiraman De ◽  
Sumit Saxena ◽  
Shobha Shukla
Keyword(s):  
Water Separation ◽  
Nanoporous Membrane ◽  
Oil Water Separation ◽  
Oil Water ◽  
Surface Modified

Continuous oil–water separation with surface modified sponge for cleanup of oil spills

RSC Advances ◽  
2014 ◽  
Vol 4 (96) ◽  
pp. 53514-53519 ◽  
Author(s):  
Daxiong Wu ◽  
Ziya Yu ◽  
Wenjuan Wu ◽  
Linlin Fang ◽  
Haitao Zhu
Keyword(s):  
Oil Spills ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Surface Modified

Preparation of superhydrophobic and superoleophilic polylactic acid nonwoven filter for oil/Water separation

2019 ◽  
Vol 41 (2) ◽  
pp. 289-296 ◽  
Author(s):  
Guochao Fan ◽  
Yunhe Diao ◽  
Beili Huang ◽  
Huige Yang ◽  
Xuying Liu ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

High Adhesion Superhydrophobic Surface Constructed by PDMS-co-PMHS Coatings Embedded with SiO2 Particles

2021 ◽  
Vol 8 (3) ◽  
pp. 23-32
Author(s):  
Wei Zhang ◽  
Shang Hao ◽  
Mingyang Chen ◽  
Bo Yang ◽  
Yuan Xie ◽  
...  
Keyword(s):  
Superhydrophobic Surface ◽  
Flexible Substrate ◽  
Nonwoven Fabric ◽  
Water Impact ◽  
Water Contact ◽  
Water Separation ◽  
Superhydrophobic Coatings ◽  
High Adhesion ◽  
Oil Water Separation ◽  
Oil Water

Superhydrophobic surfaces have attracted attention due to their hydrophobic, self-cleaning, anti-icing, and oil/water separation properties. The present study used a nonwoven fabric as a flexible substrate and constructed a high-adhesive superhydrophobic surface by coating the fabric with polydimethylsiloxane (PDMS)-co -polymethyl hydrogen siloxane (PMHS) polymers and embedding mesoporous SiO2 nanoparticles. The water contact angle (WCA) of the superhydrophobic surface was up to 165.2° at a PDMS to PMHS ratio of 4:1. The adhesion to deionized water was 99.7 μN. High hydrophobicity was maintained, even after sandpaper abrasions and flowing water impact. The surface was resistant to acid, alkali, brine, strong oxidation, and heavy metal solutions. The coating exhibited anti-icing and oil/water separation properties. This study provides a facile and effective method for constructing multifunctional superhydrophobic coatings on flexible substrates.

A multi-function textile with pH-induced switch wettability transition for controllable oil−water separation

2021 ◽  
pp. 004051752110569
Author(s):  
Long Feng ◽  
Yimiao Hou ◽  
Qingqing Hao ◽  
Mingxing Chen ◽  
Shuo Wang ◽  
...  
Keyword(s):  
Contact Angle ◽  
Separation Efficiency ◽  
Nonwoven Fabric ◽  
Dip Coating ◽  
Municipal Sewage ◽  
Alkaline Condition ◽  
Separation Performance ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

The deterioration of water ecology caused by the discharge of oil spill wastewater, industrial sewage, and municipal sewage has attracted wide attention worldwide. Thus, it is significant to design a simple, environmentally friendly approach to separate oil–water mixtures. In this work, three different fabrics with pH-induced wettability transition were prepared by a dip-coating process for oil and water separation. The dip-coating fabrics had the advantages of oil–water separation, photocatalytic degradation, and recycling. Polyethylene terephthalate/polyamide nonwoven fabric was used as the substrate materials of the fabric. The carboxylic acid-modified TiO2 endowed the fabric with hydrophilicity–hydrophobicity and photocatalytic properties. The Fe3O4 nanoparticles obtained by the coprecipitation method provided magnetism for the fabric, facilitating the recycling of the fabric and improving the hydrophobicity of the fabric. The fabrics coated with dipping solutions were superhydrophobic in a neutral environment and hydrophilic in an alkaline environment. Among the three coated fabrics, the fabric coated with stearic acid/TiO2-Fe3O4 (FST) had the most satisfying oil–water separation performance and durability. Under the neutral condition, the contact angle of the FST was 151° and the separation efficiency was 98%. Under the alkaline condition, the underwater oil contact angle of the FST was 150° and the separation efficiency was 95%. After 15 cycles, the oil–water separation rate of the FST was still higher than 90%. Due to the presence of TiO2, the coated fabric had an exceptional performance in the photodegradation of organic pollutants (69.9%). In addition, the fabrics can be quickly recovered due to magnetism.

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