Publication

On-line study of polyelectrolyte network formation by interfacial reaction

Jutta Christine Wandrey
2004
Journal Articles

Abstract

A modified synthetic boundary expt. of anal. ultracentrifugation has been employed to examine, online, polyelectrolyte complex formation at flat interfaces yielding highly swollen membranes/networks. Systematic expts. with sodium alginate as a polyanion and chitosan and poly(L-lysine) as polycations identified the influence of concn., pH, molar mass, and polycation type on the membrane characteristics and the formation process. The membranes have been evaluated by five characteristics defined herein: total thickness, compactness, heterogeneity, symmetry, and growth. The results confirm the sensitivity of the method suited to elaborate general relationships for polyelectrolyte membrane design. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/971a4562-c039-4841-84df-ef3623676336

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Jutta Christine Wandrey
2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/971a4562-c039-4841-84df-ef3623676336

About this result

Related concepts (29)

Polyelectrolyte

Polyelectrolytes are polymers whose repeating units bear an electrolyte group. Polycations and polyanions are polyelectrolytes. These groups dissociate in aqueous solutions (water), making the polymers charged. Polyelectrolyte properties are thus similar to both electrolytes (salts) and polymers (high molecular weight compounds) and are sometimes called polysalts. Like salts, their solutions are electrically conductive. Like polymers, their solutions are often viscous.

Membrane technology

Membrane technology encompasses the scientific processes used in the construction and application of membranes. Membranes are used to facilitate the transport or rejection of substances between mediums, and the mechanical separation of gas and liquid streams. In the simplest case, filtration is achieved when the pores of the membrane are smaller than the diameter of the undesired substance, such as a harmful microorganism.

Membrane

A membrane is a selective barrier; it allows some things to pass through but stops others. Such things may be molecules, ions, or other small particles. Membranes can be generally classified into synthetic membranes and biological membranes. Biological membranes include cell membranes (outer coverings of cells or organelles that allow passage of certain constituents); nuclear membranes, which cover a cell nucleus; and tissue membranes, such as mucosae and serosae.

Related publications (7)

On-line study of polyelectrolyte network formation by interfacial reaction

Chat with Graph Search

Synthesis of poly(PEGA) Bioconjugates using RAFT Polymerization

Materials and methods relating to encapsulation

Characterization of permeability and network structure of interfacially photopolymerized poly(ethylene glycol) diacrylate hydrogels