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Polyion Complex (polyion + complex)

Distribution by Scientific Domains
Polymers and Materials Science100%

Selected Abstracts

Mesoscopic Network Structure of a Semi-Rigid Polyion Complex Nested in a Polycationic Hydrogel

ADVANCED MATERIALS, Issue 46 2009
Zi Liang Wu
A dual network gel, consisting of a micrometer-scaled network-like structure of a semi-rigid polyion complex nested in a nanometer-scaled polycationic network, has been developed by polymerization of a cationic monomer in the presence of a small amount of semi-rigid polyanion as dopant. Self-assembly and viscoelastic phase separation (see figure) compete with each other during the polymerization and render the micrometer-scaled network structure, which is permanently frozen by the subsequent gelation. [source]

Solvent Resistant Honeycomb Films from Photo-Crosslinkable Polycinnamate

MACROMOLECULAR RAPID COMMUNICATIONS, Issue 8 2007
Olaf Karthaus
Abstract Microporous films consisting of two-dimensionally ordered void structures - so-called honeycomb films - were produced by evaporation of polymer solutions under high humidity. Two types of poly(vinyl cinnamate)s were used: A newly synthesized amphiphilic poly(vinyl cinnamate) and a mixture of a commercial poly(vinyl cinnamate) and an amphiphilic polyion complex. Photo-crosslinking of the honeycomb structure could be achieved by UV irradiation while completely retaining the film morphology. The crosslinked films showed excellent stability against organic solvents. [source]

Solution self-assembly of tailor-made macromolecular building blocks prepared by controlled radical polymerization techniques

POLYMER INTERNATIONAL, Issue 9 2006
Jean-François Lutz
Abstract This review describes the preparation of colloidal aggregates (spherical micelles, cylindrical micelles, polymer vesicles, multicompartment micelles, polyion complexes, schizophrenic micelles) using bottom-up self-assembly approaches. In particular, it focuses primarily on the self-organization of well-defined macromolecular building blocks (macrosurfactants, polysoaps, polyelectrolytes) synthesized by controlled radical polymerization techniques such as atom transfer radical polymerization, reversible addition fragmentation transfer polymerization and nitroxide-mediated polymerization. The goal of this review is to highlight that these versatile techniques of polymer synthesis allow the preparation of unprecedented nanostructures in dilute solutions. Copyright © 2006 Society of Chemical Industry [source]