Synthesis and rheological behavior of hydrophobically modified block copolymers

2010 ◽  
Vol 116 (5) ◽  
pp. 3047-3055 ◽  
Author(s):  
Jorge de A. Rodrigues ◽  
Regina Sandra V. Nascimento
Keyword(s):  
Block Copolymers ◽  
Rheological Behavior ◽  
Hydrophobically Modified ◽  
Modified Block

Anomalous rheological behavior of ordered phases of block copolymers. 1

1993 ◽  
Vol 26 (18) ◽  
pp. 4928-4934 ◽  
Author(s):  
Takao Ohta ◽  
Yoshihisa Enomoto ◽  
James L. Harden ◽  
Masao Doi
Keyword(s):  
Block Copolymers ◽  
Rheological Behavior ◽  
Ordered Phases

Hydrophobically Modified Dimethylacrylamide Synthesis and Rheological Behavior

2005 ◽  
Vol 38 (7) ◽  
pp. 2981-2989 ◽  
Author(s):  
Sandra L. Cram ◽  
Hugh R. Brown ◽  
Geoffrey M. Spinks ◽  
Dominique Hourdet ◽  
Costantino Creton
Keyword(s):  
Rheological Behavior ◽  
Hydrophobically Modified

Rheological behavior of hydrophobically modified polysulfobetaine methacrylate aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 33905-33913 ◽  
Author(s):  
Miao Du ◽  
Yanjie Ma ◽  
Heng Su ◽  
Xiang Wang ◽  
Qiang Zheng
Keyword(s):  
Aqueous Solution ◽  
Methacrylic Acid ◽  
Salt Concentration ◽  
Rheological Behavior ◽  
Hydrophobically Modified ◽  
Micellar Copolymerization ◽  
Added Salt

Polysulfobetaine methacrylate (PSBMA) that was hydrophobically modified with methacrylic acid 2,3-epoxypropyl ester (GMA) was synthesized via micellar copolymerization method. Viscosity of the hydrophobically modified PSBMA solution was sensitive to added salt concentration.

scholarly journals Organosilica-Modified Multiblock Copolymers for Membrane Gas Separation

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3579
Author(s):  
Ilsia M. Davletbaeva ◽  
Alexander Yu. Alentiev ◽  
Zulfiya Z. Faizulina ◽  
Ilnaz I. Zaripov ◽  
Roman Yu. Nikiforov ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Toluene Diisocyanate ◽  
Multiblock Copolymers ◽  
Gas Solubility ◽  
Membrane Gas Separation ◽  
Modified Polymers ◽  
Temperature Relaxation ◽  
Solubility Coefficients ◽  
Modified Block ◽  
The Ideal

Organosubstituted silica derivatives were synthesized and investigated as modifiers of block copolymers based on macroinitiator and 2,4-toluene diisocyanate. A peculiarity of the modified block copolymers is the existence in their structure of coplanar rigid polyisocyanate blocks of acetal nature (O-polyisocyanates). Organosubstituted silica derivatives have a non-additive effect on high-temperature relaxation and α-transitions of modified polymers and exhibit the ability to influence the supramolecular structure of block copolymers. The use of the developed modifiers leads to a change in the gas transport properties of block copolymers. The increase of the permeability coefficients is due to the increase of the diffusion coefficients. At the same time, the gas solubility coefficients do not change. An increase in the ideal selectivity for a number of gas pairs is observed. An increase in the selectivity for the CO2/N2 gas pair (from 25 to 39) by 1.5 times demonstrates the promising use of this material for flue gases separation.

scholarly journals Rheological Behavior of Drilling Fluids Containing Hydrophobically Modified Starch for Filtrate Reduction

2018 ◽  
Vol 12 (1) ◽  
pp. 86-92 ◽  
Author(s):  
Fernanda Dias ◽  
◽  
Roberta Souza ◽  
Elizabete Lucas ◽  
◽  
...  
Keyword(s):  
Rheological Behavior ◽  
Drilling Fluids ◽  
Modified Starch ◽  
Hydrophobically Modified
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