scholarly journals Surface Modification in Aqueous Dispersions with Thermo-Responsive Poly(methylvinylether) Copolymers in Combination with Ultrasonic Treatment

2011 ◽  
Vol 5 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Nikolay Bulychev ◽  
◽  
Edward Kisterev ◽  
Yulia Ioni ◽  
Ondine Confortini ◽  
...  
Keyword(s):  
Surface Modification ◽  
Ultrasonic Treatment ◽  
Aqueous Dispersions

scholarly journals Ultrasonic Treatment Enhanced Surface Modification of Titanium Oxide by Tailor-Made Surface-Active Polymers

2016 ◽  
Vol 11 (2) ◽  
pp. 121
Author(s):  
N. Bulychev ◽  
E. Kisterev ◽  
H. Reimann ◽  
C. Schaller ◽  
C.D. Eisenbach
Keyword(s):  
Surface Modification ◽  
Acrylic Acid ◽  
Ultrasonic Treatment ◽  
Aqueous Dispersions ◽  
Hydrophobically Modified ◽  
Pigment Surface ◽  
Surface Active ◽  
Electrokinetic Sonic Amplitude ◽  
Modification Of Titanium ◽  
Enhanced Surface

The surface modification of titanium dioxide in aqueous dispersions of specially tailor-made periodic acrylic acid/isobutylene copolymers, poly(acrylic acid)/polystyrene graft copolymers, and hydrophobically modified polyethyleneoxide urethane (HEUR) by ultrasonic treatment was studied. The pigment surface modification by the above copolymers was comparatively investigated regarding conventional adsorption as contrasted to an ultrasonic treatment assisted procedure. The course and efficiency of the polymer adsorpption onto the pigment surface was quantified by electrokinetic sonic amplitude measurements. The higher efficiency of the pigment surface coating by the copolymers as achieved by ultrasonic treatment varies with the copolymer architecture and is a consequence of ultrasonically induced pigment surface activation.

scholarly journals Surface Modification of Titanium Dioxide under Ultrasonic Treatment

2019 ◽  
Vol 8 (4) ◽  
pp. 4137-4140
Keyword(s):  
Titanium Dioxide ◽  
Surface Modification ◽  
Acrylic Acid ◽  
Ultrasonic Treatment ◽  
Surface Coating ◽  
Surface Activation ◽  
Aqueous Dispersions ◽  
Pigment Surface ◽  
Electrokinetic Sonic Amplitude ◽  
Modification Of Titanium

The surface modification of titanium dioxide in aqueous dispersions of specially tailor-made periodic acrylic acid/isobutylene copolymers by ultrasonic treatment was studied. The pigment surface modification by the above copolymers was comparatively investigated regarding conventional adsorption as contrasted to an ultrasonic treatment assisted procedure. The course and efficiency of the polymer adsorption onto the pigment surface was quantified by electrokinetic sonic amplitude measurements. The higher efficiency of the pigment surface coating by the copolymers as achieved by ultrasonic treatment and is a consequence of ultrasonically induced pigment surface activation.

scholarly journals SURFACE MODIFICATION OF TITANIUM DIOXIDE NANOPARTICLES WITH ACRYLIC ACID/ISOBUTYLENE COPOLYMER UNDER ULTRASONIC TREATMENT

2019 ◽  
Vol 16 (32) ◽  
pp. 338-344
Author(s):  
Nikolay A. BULYCHEV ◽  
Lev N. RABINSKIY
Keyword(s):  
Titanium Dioxide ◽  
Surface Modification ◽  
Composite Materials ◽  
Acrylic Acid ◽  
Ultrasonic Treatment ◽  
Titanium Dioxide Nanoparticles ◽  
Polymer Coatings ◽  
Pigment Surface ◽  
Electrokinetic Sonic Amplitude ◽  
Modification Of Titanium

The influence of the ultrasonic treatment of block copolymer solution on its solid-liquid interface behavior was investigated in detail. The surface modification of titanium dioxide nanoparticles in aqueous dispersions of specially tailor-made periodic acrylic acid/isobutylene copolymer by ultrasonic treatment was studied in order to get new approaches for the creation of hybrid composite materials or polymer coatings. The pigment surface modification by the above copolymer was comparatively investigated regarding conventional adsorption as contrasted to an ultrasonic treatment assisted procedure. The course and efficiency of the polymer adsorption onto the pigment surface were quantified by electrokinetic sonic amplitude measurements. The higher efficiency of the pigment surface coating by the copolymer as achieved by ultrasonic treatment in comparison to conventional adsorption is a consequence of ultrasonically induced pigment surface activation. Two perspective avenues of the utilization of the discovered effects for creation of organic-inorganic composite materials are anticipated: the nanoparticles could first be treated by ultrasound in the presence of polymers and so create a surface modifying coating and the second option is an entrainment of the nanoparticles into the monomer matrix which can be polymerized afterward yielding a polymer with immobilized nanoparticles.

Surface Modification for Polystyrene Colloidal Particles with Controlled Charge Densities

2007 ◽  
Vol 7 (11) ◽  
pp. 3995-3999
Author(s):  
Jongman Lee ◽  
Oh-Sun Kwon ◽  
Kwanwoo Shin ◽  
Ju-Myung Song ◽  
Joon-Seop Kim ◽  
...  
Keyword(s):  
Surface Modification ◽  
Acrylic Acid ◽  
Surface Charge Density ◽  
Colloidal Particles ◽  
Mixed Solvent ◽  
Pure Water ◽  
Random Copolymer ◽  
Aqueous Dispersions ◽  
Charge Densities ◽  
Quenching Process

A significant amount of polystyrene sulfonated acid (PSSA) and poly(styrene-ran-acrylic acid) (PSAA) random copolymer can be adsorbed by dispersion of PS particles via a swelling-quenching process. A THF-water mixed solvent was used in the swelling process and a large amount of pure water was used, to give a low concentration of THF% in quenching process. Our results showed that functional PSSA groups were randomly and tightly adsorbed to the PS particles. When the mol.% of charged segments was increased, the progressive adsorption of PSSA chains to the PS particles leads to an increase in the electrophoretic mobility and zeta-potential of aqueous dispersions. Thus, we were able to obtain well-distributed surface charge density on the PS particles.

scholarly journals Application of Vinyl ether Copolymers for Surface Modification of Carbon Black

2021 ◽  
Vol 15 ◽  
pp. 1414-1420 ◽  
Author(s):  
A. V. Perchenok ◽  
E. V. Suvorova ◽  
A. A. Farmakovskaya ◽  
V. Kohlert
Keyword(s):  
Vinyl Ether ◽  
Ultrasonic Treatment ◽  
Strong Increase ◽  
Molecular Architecture ◽  
Aqueous Dispersions ◽  
Dispersed Systems ◽  
Carbon Particles ◽  
Composition And Structure ◽  
Polymeric Stabilizer ◽  
Systems Studies

In this work, the possibility of stabilizing aqueous dispersed systems of carbon with vinyl ether copolymers of various composition and structure was investigated. It was shown that the presence of hydrophobic fragments in the macromolecule chain plays a significant role and positively affects the results of stabilization of aqueous dispersions of carbon particles. It was shown that the composition and molecular architecture of the stabilizing copolymer strongly affects the stabilizing ability in studied systems. Studies have shown that the use of a polymeric stabilizer in combination with ultrasonic treatment of dispersed systems makes it possible to obtain stable, homogeneous, highly dispersed suspensions. At the same time, it was demonstrated that a strong increase in the time and intensity of ultrasonic treatment of the system does not lead to a significant improvement in the results

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