Phase Behavior of Polyelectrolyte Block Copolymers in Mixed Solvents

  title={Phase Behavior of Polyelectrolyte Block Copolymers in Mixed Solvents},
  author={Galder Cristobal and Jean‐François Berret and C{\'e}drick Chevallier and Ruela Talingting-Pabalan and Mathieu Joanicot and Isabelle Grillo},
We have studied the phase behavior of the poly(n-butyl acrylate)-b-poly(acrylic acid) block copolymer in a mixture of two miscible solvents:  water and tetrahydrofuran (THF). The techniques used to examine the different polymers, structures, and phases formed in mixed solvents were static and dynamic light scattering, small-angle neutron scattering, nuclear magnetic resonance, and fluorescence microscopy. By lowering the water/THF mixing ratio X, the sequence unimers−micron-sized droplets… 
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Association of a multifunctional ionic block copolymer in a selective solvent.

It is found that the pentablock forms ellipsoidal core-shell micelles with the sulfonated polystyrene in the core and Gaussian decaying chains of swollen poly-ethylene-r-propylene and poly-t-butyl styrene tertiary in the corona.

Controlling the micellar morphology of binary PEO-PCL block copolymers in water-THF through controlled blending.

We study both experimentally and theoretically the self-assembly of binary polycaprolactone–polyethylene oxide (PCL–PEO) block copolymers in dilute solution, where self-assembly is triggered by

On the mechanism of formation of vesicles from poly(ethylene oxide)-block-poly(caprolactone) copolymers

Micelles, worm-like micelles and vesicles were prepared from poly(ethylene oxide)-b-poly(caprolactone) block copolymersvia a solvent switch method, and characterised by light scattering, X-ray

Prediction of solvent-induced morphological changes of polyelectrolyte diblock copolymer micelles.

Overall, this work was able to predict the salt-responsive morphology of polyelectrolyte materials in aqueous solution and show that a spherical-cylindrical-lamellar change in morphology can be obtained through an increase in solvent ionic strength or a decrease of poly Electrolyte length.

Self-assembly of a semi-fluorinated diblock copolymer in a selective solvent

The self-assembly of a highly incompatible siloxane containing semi-fluorinated diblock copolymer, polytrifluoro propyl methylsiloxane-b-polystyrene (SiF-PS), in toluene, a selective solvent for

Phase behavior of amphiphilic diblock co-oligomers with nonionic and ionic hydrophilic groups.

These novel amphiphiles, comprised of styrene, butyl acrylate, and alkyl hydrophobes together with ionic acrylic acid and nonionic hydroxyethylacrylate hydrophilic moieties and with a total degree of polymerization from 5 to 17, represent a new class of small-molecule surfactants that can be formed from the immense potential library of all polymerizable monomers.

Controlling the Self-Assembly of Binary Copolymer Mixtures in Solution through Molecular Architecture

We present a combined experimental and theoretical study on the role of copolymer architecture in the self-assembly of binary PEO-PCL mixtures in water-THF and show that altering the chain geometry

Coarse-Grained Model of Thiol-Epoxy-Based Alternating Copolymers in Explicit Solvents.

The cosolvent method has been widely used in the self-assembly of amphiphilic alternating copolymers (ACPs), but the role of good and selective solvents is rarely investigated. Here, we have

Effect of the Branching Pattern of Hydrophobic Dendrons on the Core Structure of Linear‐Dendritic Copolymer Micelles

Aggregation numbers for 3,4,5-based dendron copolymers were lower with more THF molecules of solvation compared to 3-5- based dendrons copolymer, the difference being greater at higher generation due to different molecular shapes.

Superoxide Dismutase Binding and Release Behaviors of Dodecylated Poly(allylamine)s: Effects of Self-Aggregation and Organic Solvents

pH sensitive dodecyl-modifi ed poly(allylamine)s associate with superoxide dismutase (SOD) in aqueous solutions at pH 5.5 and 7.4. The bound SOD can be released completely at pH 10.0 due to the


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