Sedimentation of titanium dioxide suspension in the presence of polyacrylamide flocculants

The kinetics of sedimentation of titanium dioxide suspension in aqueous and water-salt media is studied in the presence of high-molecular-weight flocculants - polyacrylamide and ionic (anionic and cationic) acrylamide copolymers. Data are obtained on the influence of flocculant concentration, the chemical nature of repeating units in polymer chains of acrylamide (co)polymers, and the order of the addition of active components on the sedimentation characteristics of titanium dioxide suspension. © 2007 Pleiades Publishing, Ltd

Модельный синтез катионного неогликолипида

A convenient approach for synthesis of both neutral and cationic carbohydratebased amphiphiles has been elaborated. Compounds synthesized intended for target delivery of pharmaceutical substances into eukaryotic cells.Разработан удобный подход к синтезу углеводсодержащих амфифилов нейтральной и катионной природы на примере получения неогликолипидов глюко-ряда. Данные соединения предназначены для направленного транспорта лекарственных средств в эукариотические клетки

Sedimentation of titanium dioxide suspension in the presence of polyacrylamide flocculants

The kinetics of sedimentation of titanium dioxide suspension in aqueous and water-salt media is studied in the presence of high-molecular-weight flocculants - polyacrylamide and ionic (anionic and cationic) acrylamide copolymers. Data are obtained on the influence of flocculant concentration, the chemical nature of repeating units in polymer chains of acrylamide (co)polymers, and the order of the addition of active components on the sedimentation characteristics of titanium dioxide suspension. © 2007 Pleiades Publishing, Ltd

Sedimentation of titanium dioxide suspension in the presence of polyacrylamide flocculants

The kinetics of sedimentation of titanium dioxide suspension in aqueous and water-salt media is studied in the presence of high-molecular-weight flocculants - polyacrylamide and ionic (anionic and cationic) acrylamide copolymers. Data are obtained on the influence of flocculant concentration, the chemical nature of repeating units in polymer chains of acrylamide (co)polymers, and the order of the addition of active components on the sedimentation characteristics of titanium dioxide suspension. © 2007 Pleiades Publishing, Ltd

Sedimentation of titanium dioxide suspension in the presence of polyacrylamide flocculants

The kinetics of sedimentation of titanium dioxide suspension in aqueous and water-salt media is studied in the presence of high-molecular-weight flocculants - polyacrylamide and ionic (anionic and cationic) acrylamide copolymers. Data are obtained on the influence of flocculant concentration, the chemical nature of repeating units in polymer chains of acrylamide (co)polymers, and the order of the addition of active components on the sedimentation characteristics of titanium dioxide suspension. © 2007 Pleiades Publishing, Ltd

Kinetics peculiarities of kaolin sedimentation in the presence of anionic and cationic polyacrylamide flocculants

Kinetics of sedimentation of the kaolin suspension with the mean particle radius R = 9.07 x 10 -6 m in the presence of anionic (A) and cationic (C) polyacrylamide flocculants was studied by means of a VT torsion balance. Sedimentation proceeded in the regime of free (nonconstrained) settling. The dependence of the flocculating effect on the concentration of polymers was analyzed. When both flocculant A and flocculant C are added, the net flocculating effect depends on the order of introduction of polymeric components. It is established that the contributions from components A and C are not additive. To explain the peculiarities of flocculation when both components are added, the dependences of the viscosity of the binary mixtures of A and C on their composition and concentration were analyzed ; in addition, ζ-potential of kaolin particles after the addition of polymers A and C was determined. It was found that the particles of the dispersed phase reverse the sign of charge at a certain proportion between flocculants

Kinetics peculiarities of kaolin sedimentation in the presence of anionic and cationic polyacrylamide flocculants

Kinetics of sedimentation of the kaolin suspension with the mean particle radius R = 9.07 x 10 -6 m in the presence of anionic (A) and cationic (C) polyacrylamide flocculants was studied by means of a VT torsion balance. Sedimentation proceeded in the regime of free (nonconstrained) settling. The dependence of the flocculating effect on the concentration of polymers was analyzed. When both flocculant A and flocculant C are added, the net flocculating effect depends on the order of introduction of polymeric components. It is established that the contributions from components A and C are not additive. To explain the peculiarities of flocculation when both components are added, the dependences of the viscosity of the binary mixtures of A and C on their composition and concentration were analyzed ; in addition, ζ-potential of kaolin particles after the addition of polymers A and C was determined. It was found that the particles of the dispersed phase reverse the sign of charge at a certain proportion between flocculants

Model synthesis of cationic neoglycolipid

A convenient approach for synthesis of both neutral and cationic carbohydratebased amphiphiles has been elaborated. Compounds synthesized intended for target delivery of pharmaceutical substances into eukaryotic cells