Self- and co-assembly of amphiphilic gradient polyelectrolyte in aqueous solution: Interaction with oppositely charged ionic surfactant

Uchman, Mariusz; Hajduová, Jana; Vlassi, Eleni; Pispas, Stergios; Appavou, Marie-Sousai; Štěpánek, Miroslav

doi:10.1016/j.eurpolymj.2015.10.015

Cited by 13 publications

(15 citation statements)

References 31 publications

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“…Both polymers self‐assemble into interchain associations very possibly because of the presence of PhOx hydrophobic groups along their contour. Associations with well‐defined hydrophobic domains have been also observed in the amphiphilic cationic gradient polyelectrolyte poly[(2‐methyl‐2‐oxazoline)‐grad‐(2‐phenyl‐2‐oxazoline)‐mod‐(ethylene imine)].…”

Section: Resultsmentioning

confidence: 85%

Hydrolyzed Poly(2‐plenyl‐2‐oxazoline)s in Aqueous Media and Biological Fluids

Vlassi

Papagiannopoulos

Pispas

2018

Macro Chemistry & Physics

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Hydrolyzed poly(2‐phenyl‐2‐oxazoline)s (PPhOx) are synthesized by partial hydrolysis of PPhOx in order to produce self‐assembling copolymers with chargeable and hydrophobic units. The resulting poly(ethylene imine‐co‐2‐phenyl‐2‐oxazoline) [P(EI‐co‐PhOx)] amphiphilic copolymers contain phenyl‐oxazoline and ethylene imine segments in a random sequence and their chemical structure is confirmed by 1H NMR and attenuated total reflection‐Fourier transform infrared spectroscopy. Static and dynamic light scattering experiments show that in aqueous solutions the random copolymers associate into aggregates of sizes in the range between 50 and 200 nm depending on the solution conditions and hydrophobic content. The positive charge of the nanoaggregates that is caused by protonation of the amine nitrogen is confirmed by zeta potential measurements. Self‐assembly in phosphate buffered saline results in large aggregates. The aggregates are proved to interact with fetal bovine serum proteins. This investigation shows that hydrolyzed phenyl oxazoline‐based copolymers provide stable amphiphilic nanoparticles able to interact with biological macromolecules for biotechnological and pharmaceutical applications.

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Section: Resultsmentioning

confidence: 85%

Hydrolyzed Poly(2‐plenyl‐2‐oxazoline)s in Aqueous Media and Biological Fluids

Vlassi

Papagiannopoulos

Pispas

2018

Macro Chemistry & Physics

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“…Analogous behavior has been observed for gradient amphiphilic copolymers. [64] However, the impact of these structural changes on solution properties has not been systematically studied, especially concerning surface activity and solution rheology.…”

Section: Figure 2 Graphical Representation Of Pescs Of Opposite Sign Charge (Top) and Same Sign Charge (Bottom)mentioning

confidence: 99%

“…Based on all the experimental observation shown in the previous section, and information from literature on analogous systems, [60,64] a qualitative model for interaction between ABPE and surfactants of various charge is presented here and illustrated in Figure 5.…”

Section: Proposed Modelmentioning

confidence: 99%

Interactions Between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Raffa¹

2021

Preprint

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The study of interactions between polyelectrolytes (PE) and surfactants is of great interest for both fundamental and applied research. These mixtures can represent, for example, models of self-assembly and molecular organization in biological systems, but they are also relevant in industrial applications. Amphiphilic block polyelectrolytes represent an interesting class of PE, but their interactions with surfactants have not been extensively explored so far, most studies being restricted to non-associating PE. In this work, interactions between an anionic amphiphilic triblock polyelectrolyte and different types of surfactants bearing respectively negative, positive and no charge, are investigated via surface tension and solution rheology measurements for the first time. It is evidenced that the surfactants have different effects on viscosity and surface tension, depending on their charge type. Micellization of the surfactant is affected by the presence of the polymer in all cases; shear viscosity of polymer solutions decreases in presence of same charge or nonionic surfactants, while the opposite charge surfactant cause precipitation. This study highlights the importance of the charge type, and the role of the associating hydrophobic block in the PE structure, on the solution behavior of the mixtures. Moreover, a possible interaction model is proposed, based on the obtained data.

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“…Many techniques have been used for the preparation of asymmetric copolymers, including anionic and cationic polymerizations, C1 polymerization, catalyst transfer polycondensation, catalyzed copolymerization of olefins and epoxides, ring‐opening metathesis polymerization (ROMP) and various RDRP techniques (e.g., atom transfer radical polymerization (ATRP), nitroxide‐mediated polymerization (NMP), organometallic‐mediated radical polymerization (OMRP), and reversible addition–fragmentation chain transfer (RAFT)).…”

Section: Synthesis Of Asymmetric Copolymersmentioning

confidence: 99%

“…Spontaneous gradient copolymers have been obtained via catalyst transfer polycondensation, catalyzed copolymerization of olefins and epoxides, diverse RDRP methods (ATRP, NMP, OMRP, RAFT,) as well as cationic ring opening polymerization . Also, the gradient‐composition backbone can be used as macroinitiators to synthesize high‐molecular‐weight brushes .…”

Section: Synthesis Of Asymmetric Copolymersmentioning

confidence: 99%

Asymmetric Copolymers: Synthesis, Properties, and Applications of Gradient and Other Partially Segregated Copolymers

Zhang

Farías-Mancilla

Destarac

et al. 2018

Macromol. Rapid Commun.

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Asymmetric copolymers are a class of materials with intriguing properties. They can be defined by a distribution of monomers within the polymer chain that is neither strictly segregated, as in the case of block copolymers, nor evenly distributed throughout each chain, as in the case of statistical copolymers. This definition includes gradient copolymers as well as block copolymers that contain segments of statistical copolymer. In this review, different methods to synthesize asymmetric copolymers are first discussed. The properties of asymmetric copolymers are investigated in comparison to those of block and random counterparts of similar composition. Finally, some examples of applications of asymmetric copolymers, both academic and industrial, are demonstrated. The aim of this review is to provide a perspective on the design and synthesis of asymmetric copolymers with useful applications.

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Self- and co-assembly of amphiphilic gradient polyelectrolyte in aqueous solution: Interaction with oppositely charged ionic surfactant

Cited by 13 publications

References 31 publications

Hydrolyzed Poly(2‐plenyl‐2‐oxazoline)s in Aqueous Media and Biological Fluids

Hydrolyzed Poly(2‐plenyl‐2‐oxazoline)s in Aqueous Media and Biological Fluids

Interactions Between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Asymmetric Copolymers: Synthesis, Properties, and Applications of Gradient and Other Partially Segregated Copolymers

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