Adsorption

Robb, Ian D.

doi:10.1016/b978-0-08-096701-1.00061-6

Cited by 13 publications

(8 citation statements)

References 223 publications

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“…In summary with increasing distance between charges on the polymer chains the adsorbed amount on uncharged or weakly charged surfaces increases, too. 4 (b) PDMAEMA Adsorption. The basic PDMAEMA homopolyelectrolyte is neutral at high pH and positively charged at low pH.…”

Section: Adsorption Of the Homopolyelectrolytes As A Function Of Phmentioning

confidence: 99%

“…While polyelectrolytes in solution are well investigated, 1,2 there are only a few examinations of the adsorption at the solid/liquid interface. [3][4][5][6][7][8][9][10][11][12] Investigations on adsorption of ampholytic block copolymers are not reported up to now. The understanding of adsorption and desorption of these polymers under different solution conditions is fundamental for technological utilization and improvements.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption of ampholytic polyelectrolytes such as proteins plays a key role in many biological processes, e.g., the coagulation of blood on artificial implants. While polyelectrolytes in solution are well investigated, , there are only a few examinations of the adsorption at the solid/liquid interface. − Investigations on adsorption of ampholytic block copolymers are not reported up to now. The understanding of adsorption and desorption of these polymers under different solution conditions is fundamental for technological utilization and improvements.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Ampholytic Diblock Copolymers from Dilute Aqueous Solution at the Solid/Liquid Interface

et al. 1999

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The adsorption of the ampholytic diblock copolymer poly(methacrylic acid)-block-poly((dimethylamino)ethyl methacrylate) (PMAA-b-PDMAEMA) and the corresponding homopolyelectrolytes of the two blocks, PMAA and PDMAEMA, was investigated from dilute aqueous solution on silicon substrates. The adsorbed amount of polymer as a function of pH, polyampholyte concentration, and salt concentration in solution has been determined by ellipsometry at room temperature. As a function of pH the adsorbed amount reaches its maximum at the isoelectric point of the polyampholyte. Some adsorption takes place even in pH ranges where the surface charge has the same sign as the net charge of the polyampholyte. By variation of the polyampholyte concentration, typical adsorption isotherms were determined at several pH values. With increasing salt concentration the adsorbed amount increases, and above a critical concentration it diverges to very large values. The measured dependencies can be explained by the adsorption of one or the other of the two blocks depending on acidity and ionic strength and are in good agreement with theoretical predictions. Adsorption kinetics has also been studied in detail, and the diffusion coefficient of the polyampholyte toward the surface has been obtained in the early state of adsorption as a function of pH, polyampholyte concentration, and salt concentration.

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Section: Adsorption Of the Homopolyelectrolytes As A Function Of Phmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption of Ampholytic Diblock Copolymers from Dilute Aqueous Solution at the Solid/Liquid Interface

et al. 1999

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“…Problems associated with colloid stabilization, lubrication, adhesion and flocculation phenomena have attracted much attention in this respect (Refs. [34][35][36]. In this section we report upon preliminary experiments aimed at assessing the applicability of luminescence techniques, particularly TRAMS, to the study of polymer adsorption at solid-water interfaces.…”

Section: Interactions Of Water-soluble Polymers At the Liquid-solid Imentioning

confidence: 99%

Applications of time‐resolved anisotropy measurements to the study of molecular mobility and order in polymer systems

Soutar

Swanson

1995

Macromolecular Symposia

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“…Viscous capillary flow has been firmly established both theoretically and experimentally [1,2]. Up to now the method of combination of the literature-reported Mark-Houwink equation and the measured intrinsic viscosity under the same experimental conditions (same temperature and solvent or added salt aqueous solution) for evaluating the molar mass of polymers has been widely used for its convenience and economy [3,4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of interfacial phenomena of aqueous solutions of polyethylene oxide and polyethylene glycol flowing in hydrophilic and hydrophobic capillary viscometers

Cai

Cheng

et al. 2004

Journal of Colloid and Interface Science

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Adsorption

Cited by 13 publications

References 223 publications

Adsorption of Ampholytic Diblock Copolymers from Dilute Aqueous Solution at the Solid/Liquid Interface

Adsorption of Ampholytic Diblock Copolymers from Dilute Aqueous Solution at the Solid/Liquid Interface

Applications of time‐resolved anisotropy measurements to the study of molecular mobility and order in polymer systems

Analysis of interfacial phenomena of aqueous solutions of polyethylene oxide and polyethylene glycol flowing in hydrophilic and hydrophobic capillary viscometers

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