Publication

Adsorption of charged macromolecules on oppositely charged porous column materials

Jutta Christine Wandrey, Ruth Freitag
2004
Journal Articles

Abstract

A family of cationic polyelectrolytes possessing defined chain lengths, narrow chain length distributions, uniform charge d., but substituents of different hydrophilicity at the quaternary ammonium group served as model compds. for adsorption studies. These studies quant. revealed that polymer characteristics and electrostatic parameters affect the adsorption behavior on oppositely charged porous column materials. The presence of electrostatic exclusion, in addn. to size exclusion, was proved comparing mol., electrostatic and geometrical parameters. The dominance of electrostatic effects could be concluded evaluating the relation between mol. and electrostatic dimensions. The results provide a contribution how to est. the threshold for electrostatic exclusion from pores as a function of dimensions and exptl. conditions. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/7ab84328-0bdf-4564-b749-f183b1f21356

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Jutta Christine Wandrey, Ruth Freitag
2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7ab84328-0bdf-4564-b749-f183b1f21356

About this result

Related concepts (26)

Polymer

A polymer (ˈpɒlᵻmər; Greek poly-, "many" + -mer, "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function.

Adsorption

Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. This process differs from absorption, in which a fluid (the absorbate) is dissolved by or permeates a liquid or solid (the absorbent). Adsorption is a surface phenomenon and the adsorbate does not penetrate through the surface and into the bulk of the adsorbent, while absorption involves transfer of the absorbate into the volume of the material, although adsorption does often precede absorption.

Polymer chemistry

Polymer chemistry is a sub-discipline of chemistry that focuses on the structures of chemicals, chemical synthesis, and chemical and physical properties of polymers and macromolecules. The principles and methods used within polymer chemistry are also applicable through a wide range of other chemistry sub-disciplines like organic chemistry, analytical chemistry, and physical chemistry. Many materials have polymeric structures, from fully inorganic metals and ceramics to DNA and other biological molecules.

Related publications (3)

Adsorption of charged macromolecules on oppositely charged porous column materials

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