Synthesis of aminopyridine-containing conjugated microporous polymers with excellent superhydrophobicity for oil/water separation

2018 ◽  
Vol 42 (18) ◽  
pp. 14863-14869 ◽  
Author(s):  
Rui Jiao ◽  
Lulu Bao ◽  
Wanli Zhang ◽  
Hanxue Sun ◽  
Zhaoqi Zhu ◽  
...  
Keyword(s):  
Large Scale ◽  
Water Separation ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Oil Water Separation ◽  
Oil Water ◽  
Conjugated Microporous Polymers

Aminopyridine-containing conjugated microporous polymer based membranes with excellent superhydrophobicity for continuous oil/water separation on a large scale.

scholarly journals Carbon Nanotubes and Polydopamine Modified Poly(dimethylsiloxane) Sponges for Efficient Oil–Water Separation

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2431
Author(s):  
Wen Zhang ◽  
Juanjuan Wang ◽  
Xue Han ◽  
Lele Li ◽  
Enping Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
Absorption Capacity ◽  
Potential Candidate ◽  
Hard Template ◽  
Water Separation ◽  
Industrial Oil ◽  
The Matrix ◽  
Oil Water Separation ◽  
Oil Water

In this paper, effective separation of oil from both immiscible oil–water mixtures and oil-in-water (O/W) emulsions are achieved by using poly(dimethylsiloxane)-based (PDMS-based) composite sponges. A modified hard template method using citric acid monohydrate as the hard template and dissolving it in ethanol is proposed to prepare PDMS sponge composited with carbon nanotubes (CNTs) both in the matrix and the surface. The introduction of CNTs endows the composite sponge with enhanced comprehensive properties including hydrophobicity, absorption capacity, and mechanical strength than the pure PDMS. We demonstrate the successful application of CNT-PDMS composite in efficient removal of oil from immiscible oil–water mixtures within not only a bath absorption, but also continuous separation for both static and turbulent flow conditions. This notable characteristic of the CNT-PDMS sponge enables it as a potential candidate for large-scale industrial oil–water separation. Furthermore, a polydopamine (PDA) modified CNT-PDMS is developed here, which firstly realizes the separation of O/W emulsion without continuous squeezing of the sponge. The combined superhydrophilic and superoleophilic property of PDA/CNT-PDMS is assumed to be critical in the spontaneously demulsification process.

scholarly journals Fabricated of Superhydrophobic Silanized Melamine Sponge with Photochromic Properties for Efficiency Oil/Water Separation

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Peng Hong ◽  
Zhu Liu ◽  
Yang Gao ◽  
Yubin Chen ◽  
Mingxun Zhuang ◽  
...  
Keyword(s):  
Large Scale ◽  
Separation Efficiency ◽  
Low Cost ◽  
Water Repellency ◽  
Dip Coating ◽  
Absorption Capacity ◽  
Photochromic Properties ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Superhydrophobic sponge as potential absorbing material for oil/water separation is attracting great attention recently. However, there are still some challenges to feasibly fabricate superhydrophobic sponge with large scale and low cost. Herein, a novel photochromic superhydrophobic melamine sponge (PDMS-SP sponge) is fabricated by facilely dip-coating and thermocuring of hydroxyl-terminated polydimethylsiloxanes mixed with photochromic spiropyran. FT-IR, EDS, and XPS results confirm the successful coating of PDMS-SP upon melamine sponge. The resultant sponge not only possesses excellent water repellency with a contact angle of 154.5° and oil-water separation efficiency with an oil absorption capacity of 48–116 folds of itself weight, but also shows photochromic phenomenon between colorless and purple when it is successively exposed to UV irradiation and visible light.

3D network super-hydrophobic hexafluorbisphenol A poly(aryl ether ketone) membrane prepared by one-step electrospraying

2020 ◽  
Vol 32 (10) ◽  
pp. 1094-1101
Author(s):  
Yongpeng Wang ◽  
Pengtao Yan ◽  
Xintong Huo ◽  
Mengzhu Liu ◽  
Haibo Zhang ◽  
...  
Keyword(s):  
Large Scale ◽  
Condensation Polymerization ◽  
Aryl Ether ◽  
Sliding Angle ◽  
Water Separation ◽  
3D Network ◽  
Oil Water Separation ◽  
Aryl Ether Ketone ◽  
Oil Water ◽  
Ether Ketone

Novel super-hydrophobic poly(aryl ether ketone) (PAEK) membranes have been firstly prepared by modifying ordinary PAEK into hexafluorbisphenol A-PAEK through traditional nucleophilic condensation polymerization and subsequently simple electrospraying technique. With the solution concentration increased, the micromorphology exhibited nanofibers, nanofiber with spindles, 3D network with microspheres embedded, microspheres and dense films, successively. The static water contact angle increased from 99° to 155°, while the sliding angle from 1.3° to 6.8° (±1°), in which the 3D network presented the strongest super-hydrophobicity. After 200 h of water flushing, the rough surface structure and super-hydrophobicity of the membranes were well retained. Moreover, the membrane exhibited wonderful self-cleaning property, oil/water separation property, and stability due to the hierarchical micro/nanostructures. This work provides a new route for the creation of super-hydrophobic high performance engineering plastic fabrics with the potential values in large-scale application of filtration, oil/water separation, and antifouling.

scholarly journals Network formation mechanisms in conjugated microporous polymers

2014 ◽  
Vol 5 (21) ◽  
pp. 6325-6333 ◽  
Author(s):  
Andrea Laybourn ◽  
Robert Dawson ◽  
Rob Clowes ◽  
Tom Hasell ◽  
Andrew I. Cooper ◽  
...  
Keyword(s):  
Network Formation ◽  
Formation Mechanisms ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Conjugated Microporous Polymers

The mechanism of network formation for a conjugated microporous polymer (CMP-1) has been investigated in detail.

Gfp chromophore integrated conjugated microporous polymers: topological and ESPT effects on emission properties

2019 ◽  
Vol 55 (19) ◽  
pp. 2837-2840 ◽  
Author(s):  
Ashish Singh ◽  
Debabrata Samanta ◽  
Mrinal Boro ◽  
Tapas Kumar Maji
Keyword(s):  
Green Emission ◽  
Emission Properties ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Gfp Chromophore ◽  
Conjugated Microporous Polymers

Covalent linking of the red emissive gfp chromophore in a conjugated microporous polymer (CMP) displays green emission similar to natural gfp due to topological effects.

Highly fluorescent conjugated microporous polymers for concurrent adsorption and detection of uranium

2019 ◽  
Vol 7 (18) ◽  
pp. 11214-11222 ◽  
Author(s):  
Meiyun Xu ◽  
Tao Wang ◽  
Peng Gao ◽  
Li Zhao ◽  
Lei Zhou ◽  
...  
Keyword(s):  
Microporous Polymers ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Acidic Conditions ◽  
Conjugated Microporous Polymers

A highly fluorescent conjugated microporous polymer with amidoxime is reported for concurrent adsorption and detection of uranium under acidic conditions.

Ultrahigh volatile iodine capture by conjugated microporous polymer based on N,N,N′,N′-tetraphenyl-1,4-phenylenediamine

2019 ◽  
Vol 10 (20) ◽  
pp. 2608-2615 ◽  
Author(s):  
Shun Wang ◽  
Yuchuan Liu ◽  
Yu Ye ◽  
Xianyu Meng ◽  
Jianfeng Du ◽  
...  
Keyword(s):  
Iodine Vapor ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Conjugated Microporous Polymers

Conjugated microporous polymers based on N,N,N′,N′-tetraphenyl-1,4-phenylenediamine exhibit ultrahigh iodine vapor uptake and good CO2 adsorption.

SLOP TANK DESIGN FOR IMPROVED LOAD-ON-TOP

1975 ◽  
Vol 1975 (1) ◽  
pp. 195-200
Author(s):  
Robert J. Fiocco ◽  
Vincent W. Ridley
Keyword(s):  
Large Scale ◽  
Focal Point ◽  
Operational Flexibility ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oily Water ◽  
Oil Water ◽  
Tank Design ◽  
Oil Tankers ◽  
Capacity Structure

ABSTRACT Slop tanks are the focal point of the Load-On-Top system used on crude oil tankers to prevent pollution of the sea. Design of these tanks and their operating procedures strongly affect the degree of oil-water separation achieved. This paper presents the results of an investigation undertaken to define designs and procedures for improving separation and minimizing oil discharge to sea. The program was funded in part by the U.S. Maritime Administration. Based on tanker experience and laboratory tests with tank models, guidelines on capacity, structure, inlets, outlets, system design, and wastewater handling, procedures were developed. The guidelines aim at assuring successful Load-On-Top operations by (1) providing tanker operational flexibility for handling oily water, (2) minimizing the degree of oil-water mixing, (3) avoiding re-dispersion of separated oil during feeding and discharging operations, and (4) eliminating the possibility of accidental oil contamination. This investigation provides a basis for future large-scale or shipboard studies to improve the performance of slop tanks on existing tankers as well as on future tankers.

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