A Nonaqueous Method for Sizing Wool Yarns: Preliminary Work

1988 ◽  
Vol 58 (2) ◽  
pp. 116-122 ◽  
Author(s):  
D. Nason
Keyword(s):  
Fluidized Bed ◽  
Water Soluble ◽  
Air Cooling ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Preliminary Work ◽  
Novel Method ◽  
Polymer Size

Preliminary work has shown the feasibility of a novel method of sizing wool yarns. The method is a nonaqueous, package-to-package technique in which a polymer size is applied to a yarn running through an air fluidized bed of powdered polymer, followed by in situ melting and air cooling. Some water soluble polymers that have properties suitable for application by this method have been investigated. Coated yarns have been produced with polymer add-on levels of 6% and 24% at treatment speeds of 70 and 40 meters/minute, respectively. Yarns treated with a water soluble polyester based polymer showed reduced hairiness and reduced incidence of fabric stitching faults in weaving trials.

SET-LRP of NIPAM in water via in situ reduction of Cu(ii) to Cu(0) with NaBH4

2016 ◽  
Vol 7 (4) ◽  
pp. 933-939 ◽  
Author(s):  
Mikhail Gavrilov ◽  
Timothy J. Zerk ◽  
Paul V. Bernhardt ◽  
Virgil Percec ◽  
Michael J. Monteiro
Keyword(s):  
Electron Transfer ◽  
Radical Polymerization ◽  
Living Radical Polymerization ◽  
Water Soluble ◽  
New Method ◽  
Single Electron Transfer ◽  
In Situ Reduction ◽  
Water Soluble Polymers ◽  
Soluble Polymers

The direct and quantitative reduction of the air-stable Cu(ii)Br2/Me6TREN to Cu(0) by NaBH4 represents a new method for the aqueous single electron transfer-living radical polymerization (SET-LRP) of water soluble polymers.

scholarly journals Polymer Injectivity Test Design Using Numerical Simulation

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 801
Author(s):  
Mohamed Adel Alzaabi ◽  
Jørgen Gausdal Jacobsen ◽  
Shehadeh Masalmeh ◽  
Ali Al Sumaiti ◽  
Øystein Pettersen ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Water Soluble ◽  
Polymer Rheology ◽  
Water Soluble Polymers ◽  
Shear Rates ◽  
Soluble Polymers ◽  
High Shear Rates ◽  
Water Viscosity ◽  
Source Of Information

Polymer flooding is an enhanced oil recovery (EOR) process, which has received increasing interest in the industry. In this process, water-soluble polymers are used to increase injected water viscosity in order to improve mobility ratio and hence improve reservoir sweep. Polymer solutions are non-Newtonian fluids, i.e., their viscosities are shear dependent. Polymers may exhibit an increase in viscosity at high shear rates in porous media, which can cause injectivity loss. In contrast, at low shear rates they may observe viscosity loss and hence enhance the injectivity. Therefore, due to the complex non-Newtonian rheology of polymers, it is necessary to optimize the design of polymer injectivity tests in order to improve our understanding of the rheology behavior and enhance the design of polymer flood projects. This study has been addressing what information that can be gained from polymer injectivity tests, and how to design the test for maximizing information. The main source of information in the field is from the injection bottom-hole pressure (BHP). Simulation studies have analyzed the response of different non-Newtonian rheology on BHP with variations of rate and time. The results have shown that BHP from injectivity tests can be used to detect in-situ polymer rheology.

scholarly journals Fluidized Bed Pilot Furnace for Modibdenite Concentrate

2020 ◽  
pp. 201-205
Author(s):  
X. Adinayev ◽  
Y. Safarov ◽  
V. P. Guro
Keyword(s):  
Fluidized Bed ◽  
Water Soluble ◽  
Raw Material ◽  
Charge Composition ◽  
Material Base ◽  
Molybdenite Concentrate ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Oxidative Roasting ◽  
Mo Content

In the Rare Metals Processing Shop (CPRM) at the Almalyk MMC JSC, the technology for processing molybdenite concentrate (MOC) provides for the use of kaolin in the granulation charge for oxidative roasting in a drum furnace. Its composition: 8-10% kaolin, the rest is molybdenite concentrate (MOC). Kaolin reduces the Mo content in the cinder. Replacing it with an organic binder eliminates this disadvantage (dilution in Mo), but leads to sticking of the granules in the drum furnace. To avoid sticking, it is proposed to replace it with a furnace of a different design. In addition to kaolin as a binder for MOK, ashless, water-soluble polymers are known. Replacing kaolin with them leads to an enrichment in molybdenum of an industrial product - cinder, by 4-5%. However, for the implementation of such a project, a based selection of the appropriate binder on the local raw material base, modes of its use and replacement of the roasting furnace: drum - with a fluidized (fluidized) bed furnace is required. A binder SK, an alternative to kaolin, and modes of firing granules from a new charge composition with MOC in a fluidized bed furnace have been developed. The design of the fluidized bed furnace has been developed. The introduction of these developments will provide a higher content of Mo in the cinder, better recovery of Mo and Re from it, as well as a lower sulfur content in the cinder, and less time spent on roasting: 1 hour instead of 7 hours in the existing rotary kiln.

New quenching media based on water-soluble polymers

1981 ◽  
Vol 23 (2) ◽  
pp. 104-106 ◽  
Author(s):  
A. V. Tolstousov ◽  
O. A. Bannykh
Keyword(s):  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Quenching Media

scholarly journals SANS quantification of bound water in water-soluble polymers across multiple concentration regimes

Soft Matter ◽  
2021 ◽  
Author(s):  
Helen Yao ◽  
Bradley D. Olsen
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Bound Water ◽  
Water Soluble ◽  
Wide Concentration Range ◽  
Water Molecules ◽  
Water Soluble Polymers ◽  
Soluble Polymers

Small-angle neutron scattering is used to measure the number of bound water molecules associating with three polymers over a wide concentration range. Different fitting workflows are evaluated and recommended depending on the concentration regime.

scholarly journals Flow Enhancement of Water-Soluble Polymers through Porous Media by Preshearing

2021 ◽  
Author(s):  
Mohsen Mirzaie Yegane ◽  
Julia Schmidt ◽  
Fatima Dugonjic-Bilic ◽  
Benjamin Gerlach ◽  
Pouyan E. Boukany ◽  
...  
Keyword(s):  
Porous Media ◽  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Flow Enhancement
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