scholarly journals A polymer coating which is sticky yet repulsive to water and slippery yet attractive for oils

2020 ◽  
Vol 56 (19) ◽  
pp. 2877-2880 ◽  
Author(s):  
Eleanor P. Milnes-Smith ◽  
Corinne A. Stone ◽  
Susan Perkin
Keyword(s):  
Polymer Coating ◽  
Step Process ◽  
One Step

A one-step process has been developed to produce a polymer coating which is hydrophobic and oleophilic, but which oil slides off and water adheres to at all tilt angles – including when vertically inclined or inverted.

scholarly journals An efficient recyclable magnetic material for the selective removal of organic pollutants

2016 ◽  
Vol 7 ◽  
pp. 1447-1453 ◽  
Author(s):  
Clément Monteil ◽  
Nathalie Bar ◽  
Agnès Bee ◽  
Didier Villemin
Keyword(s):  
Organic Pollutants ◽  
Polymer Coating ◽  
Magnetic Core ◽  
Maghemite Nanoparticles ◽  
Step Process ◽  
Ph Values ◽  
Low Concentrations ◽  
Wide Range ◽  
One Step ◽  
Harsh Conditions

Wastewater cleaning strategies based on the adsorption of materials are being increasingly considered, but the wide variety of organic pollutants at low concentrations still makes their removal a challenge. The hybrid material proposed here consists of a zwitterionic polyethylenimine polymer coating a magnetic core. Polyethylenimine is phosphonated at different percentages by a one-step process and used to coat maghemite nanoparticles. It selectively extracts high amounts of cationic and anionic contaminants over a wide range of pH values, depending on the adjustable number of phosphonate groups introduced on the polymer. After recovering the nanoparticles with a magnet, pollutants are quantitatively released by repeated washing with low amounts of pH-adjusted water. The material can be reused many times without noticeable loss of efficiency and is designed to resist high temperatures, oxidation and harsh conditions.

Double-Walled Microspheres for Drug Delivery

1993 ◽  
Vol 331 ◽  
Author(s):  
Kathleen J. Pekarek ◽  
Jules S. Jacob ◽  
Edith Mathiowltz
Keyword(s):  
Release Rate ◽  
Polymer Coating ◽  
Burst Effect ◽  
Step Process ◽  
Immiscible Polymers ◽  
Single Drug ◽  
Geometric Configurations ◽  
One Step ◽  
Release Curve ◽  
Polymer Type

AbstractPresent microsphere delivery system technology consisting of a single drug dispersed within a polymer matrix has several drawbacks. One is the problem of the so-called “burst effect”. By exploiting the phenomenon of phase separation between two immiscible polymers dissolved in a mutual solvent, a double-walled microsphere could be manufactured with the second polymer coating the polymer/drug matrix. This one-step process would give a consistent coating of even very small microspheres not achievable via normal, two-step coating processes and would help to smooth out the release curve by lessening the “burst effect”. Along with solving the problem of the “burst effect”, this concept of double-walled microspheres could be used to achieve constant release of the drug over long periods of time. So far, this has only been achieved with a limited number of geometric configurations. Since every polymer has its own characteristic release rate, the release could be kept much more constant by changing the polymer type and/or properties. By combining these layers so that the release rate of one layer would complement the slowing of release due to decreased surface area or increased diffusion distances.

Functionalized aluminum-catalyzed silicon nanowire formation and radial junction photovoltaic devices

Nanoscale ◽  
2021 ◽  
Author(s):  
Wipakorn Jevasuwan ◽  
Naoki Fukata
Keyword(s):  
Surface Modification ◽  
Solar Cells ◽  
Surface Defects ◽  
Silicon Nanowire ◽  
Photovoltaic Devices ◽  
Step Process ◽  
One Step ◽  
Length Reduction

Vertical Al-catalyzed SiNW arrays with shaped surfaces were synthesized by a one-step process and NW-based solar cells were demonstrated with optimized NW surface defects through surface modification and length reduction.

MgO nanoparticles synthesized starting from an innovative one-step process

2017 ◽  
Vol 101 (4) ◽  
pp. 1780-1789 ◽  
Author(s):  
Giuliana Taglieri ◽  
Valeria Daniele ◽  
Claudia Mondelli
Keyword(s):  
Mgo Nanoparticles ◽  
Step Process ◽  
One Step

Nanowire Fabrication of Silicon-Based Materials

2007 ◽  
Vol 561-565 ◽  
pp. 1197-1199
Author(s):  
Hideo Kohno ◽  
Seiji Takeda
Keyword(s):  
Electron Microscopy ◽  
Silicon Carbide ◽  
Silicon Germanium ◽  
Iron Silicide ◽  
Growth Mechanisms ◽  
Step Process ◽  
One Step ◽  
Silicon Based

This paper describes our recent achievements in fabricating various kinds of nanowires of silicon-based materials including beta iron-silicide, silicon carbide, and silicon germanium. Some of them can be grown directly at one-step process, while the others can be fabricated using nanowire templates. We discuss their structures, growth mechanisms, and properties based on electron microscopy observations.

scholarly journals Air-gap membrane distillation as a one-step process for textile wastewater treatment

2019 ◽  
Vol 360 ◽  
pp. 1330-1340 ◽  
Author(s):  
Sebastian Leaper ◽  
Ahmed Abdel-Karim ◽  
Tarek A. Gad-Allah ◽  
Patricia Gorgojo
Keyword(s):  
Wastewater Treatment ◽  
Textile Wastewater ◽  
Membrane Distillation ◽  
Air Gap ◽  
Step Process ◽  
Air Gap Membrane Distillation ◽  
One Step ◽  
Textile Wastewater Treatment
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