English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We have linked the structural and dynamic properties in aqueous solution ofamphiphilic charged diblock copolymers poly(butyl acrylate)-b-poly(acrylicacid), PBA-b-PAA, synthesized by controlled radical polymerization, with thephysico-chemical characteristics of the samples. Despite product imperfections,the samples self-assemble in melt and aqueous solutions as predicted bymonodisperse microphase separation theory. However, the PBA core are abnormallylarge; the swelling of PBA cores is not due to AA (the Flory parameterchiPBA/PAA, determined at 0.25, means strong segregation), but to h-PBAhomopolymers (content determined by Liquid Chromatography at the Point ofExclusion and Adsorption Transition LC-PEAT). Beside the dominant population ofmicelles detected by scattering experiments, capillary electrophoresis CEanalysis permitted detection of two other populations, one of h-PAA, and theother of free PBA-b-PAA chains, that have very short PBA blocks and neverself-assemble. Despite the presence of these free unimers, the self-assembly insolution was found out of equilibrium: the aggregation state is historydependant and no unimer exchange between micelles occurs over months(time-evolution SANS). The high PBA/water interfacial tension, measured at 20mN/m, prohibits unimer exchange between micelles. PBA-b-PAA solution systemsare neither at thermal equilibrium nor completely frozen systems: internalfractionation of individual aggregates can occur.

Chemical analysis and aqueous solution properties of Charged Amphiphilic Block Copolymers PBA-b-PAA synthesized by MADIX