Water-Soluble Polymers. 81. Direct Synthesis of Hydrophilic Styrenic-Based Homopolymers and Block Copolymers in Aqueous Solution via RAFT

2001 ◽  
Vol 34 (7) ◽  
pp. 2248-2256 ◽  
Author(s):  
Yoshiro Mitsukami ◽  
Michael S. Donovan ◽  
Andrew B. Lowe ◽  
Charles L. McCormick
Keyword(s):  
Aqueous Solution ◽  
Block Copolymers ◽  
Direct Synthesis ◽  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers

Rare Earth Ion from Aqueous Solution Removed by Polymer Enhanced Ultrafiltration Process

2011 ◽  
Vol 233-235 ◽  
pp. 959-964 ◽  
Author(s):  
Gui E Chen ◽  
De Sun ◽  
Zhen Liang Xu
Keyword(s):  
Aqueous Solution ◽  
Rare Earth ◽  
Low Ph ◽  
Water Soluble ◽  
Rare Earth Ion ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Ion Rejection ◽  
Ultrafiltration Process ◽  
Added Salt

An efficiency of rare earth (europium, Eu) removal from aqueous solutions by polymer enhanced ultrafiltration (PEUF) process was investigated using two water-soluble polymers polyacrylic acid (PAA) and polyethylenimine (PEI). The effects of loading ratios of Eu to PAA or PEI, pH of solution and the added salt on Eu removal were evaluated. It was shown that the binding capacities for PAA and PEI to Eu ions were 0.8g Eu/g PAA and 0.5g Eu/g PEI, respectively. Eu ion rejection R decreased significantly at a low pH compared to the results at high pH, regardless of using PAA or PEI. Compared to the PAA case, PEI enhanced UF was more sensitive with changing pH. The effect of the added salt was slightly weak at pH 4-5.At the decomplexation stage, when permeate volume was equal to three times than that of the retentate, Eu removal efficiency (X) of Eu-PAA enhanced UF was 79.5% while that of Eu-PEI enhanced UF was 76.1%, and the polymer PAA and PEI could be recovered more than 97% and 93%, respectively. Eu in the retentate could be extracted effectively and the purified PAA and PEI solution were obtained. The recovered PAA and PEI solution was same as the fresh PAA and PEI solution in PEUF processes carried out by using the recovery recovered PAA and PEI as complex agents.

Wormlike micelles versus water-soluble polymers as rheology-modifiers: similarities and differences

2017 ◽  
Vol 19 (36) ◽  
pp. 24458-24466 ◽  
Author(s):  
Ji Wang ◽  
Yujun Feng ◽  
Niti R. Agrawal ◽  
Srinivasa R. Raghavan
Keyword(s):  
Aqueous Solution ◽  
Water Soluble ◽  
Wormlike Micelles ◽  
Soluble Polymer ◽  
Water Soluble Polymer ◽  
Water Soluble Polymers ◽  
Rheological Behaviors ◽  
Soluble Polymers ◽  
Similarities And Differences

Rheological behaviors and aqueous solution microstructures of wormlike micelles and a water-soluble polymer are compared.

scholarly journals USE OF AN AQUEOUS SOLUTION «PHOTODITAZIN», COMPLEXED WITH A VARIETY OF POLYMERS FORTHE TREATMENT OF PURULENT WOUNDS OF SOFT TISSUE EXPERIMENT

2016 ◽  
Vol 7 (2) ◽  
pp. 45-49
Author(s):  
A B Solovyeva ◽  
A L Spokoyniy ◽  
T G Rudenko ◽  
A B Shekhter ◽  
N N Glagolev ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photodynamic Therapy ◽  
Histological Study ◽  
Water Soluble ◽  
Pluronic F127 ◽  
Cytotoxic Effects ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Purulent Wounds ◽  
Before And After

The article presents the results of a study of water-soluble polymers effects on the “Photoditazin” activity and the course of wound process under photodynamic therapy of purulent wounds in rats. The data of macroscopic and histological study of wounds status before and after photodynamic therapy, and assessed the quality and degree of intensity of reparative processes under influence of photodynamic therapy with the drug “Photoditazin” and its complexes with water-soluble polymers of natural poly- saccharide chitosan and a triple block copolymer of ethylene- and propylene oxide (pluronic F127).It was given the rationale for Pluronic F127 joining to the drug “Photoditazine” for reducing the cytotoxic effects of the drug.

To the Question of the Cement-Polymer Composite Materials’ Rheological Properties

2019 ◽  
Vol 974 ◽  
pp. 156-161 ◽  
Author(s):  
N.N. Onoprienko
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Composite Materials ◽  
Rheological Properties ◽  
Correlation Coefficient ◽  
Water Soluble ◽  
Rheological Parameters ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Bonding Material

The domestic and foreign production polymers effects studies’ results on the cement-polymer test rheological indicators are analyzed, taking into account the composition of the functional groups of water-soluble polymers and the viscosity of their one-percent aqueous solution. The rheological studies’ results of the Yunis Granit bonding material for fixing the large-format slabs of natural stone and porcelain are presented. The Ostwald, Bingham and Barkley-Herschel equations are considered to describe the flow of pseudoplastic, viscoelastic and rheological complex bodies and their disadvantages. The formula for calculating the rheological parameters: the flowability and the dilution coefficient of nonlinear visco-plastic bodies is proposed and verified. It is shown that the proposed formula describes the structural-mechanical properties of nonlinear visco-plastic systems with a high correlation coefficient.

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