Adsorbed Monomer Analog of a Common Polyelectrolyte
نویسندگان
چکیده
The monomer analog of a common water-soluble charged macromolecule shows surface tilt and cooperative adsorption that would be expected for larger surfactant molecules—the small organic ion behaves as an embryonic surfactant. Yet the organic ion competes with inorganic ions (Na, Mg, etc.) for access to the surface, and therefore its tilt increases with the size of the competing coion. Similar ordering of charged units along a polyelectrolyte chain would be sterically frustrated. This suggests a new contribution to surface energetics when a charged macromolecule adsorbs. [S0031-9007(98)05926-2]
منابع مشابه
Polyelectrolyte Adsorption on Charged Substrate
The behavior of a polyelectrolyte adsorbed on a charged substrate of high-dielectric constant is studied by both Monte-Carlo simulation and analytical methods. It is found that in a low enough ionic strength medium, the adsorption transition is first-order where the substrate surface charge still keeps repulsive. The monomer density at the adsorbed surface is identified as the order parameter. ...
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