Synthesis of associative block copolymers electrolytes via RAFT polymerization

Díaz-Silvestre, Sergio; Saldívar‐Guerra, Enrique; Rivera-Vallejo, Claudia; Thomas, Claude St; Cabello-Romero, Judith N.; Guerrero‐Santos, Ramiro; Jiménez‐Regalado, Enrique J.

doi:10.1007/s00289-017-2071-6

Cited by 11 publications

(4 citation statements)

References 38 publications

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“…On the basis of the rheological properties of associating polyelectrolyte copolymers recently revealed by our group, 46,47 thus iterate polymerization reactions were carried out under similar conditions for obtaining four (co)polymers with identical structural properties such as: macroRAFT, triblock, pentablock and heptablock copolymers. Reactions were performed via RAFT polymerization at a temperature of 25°C using redox initiators giving access to amphiphilic copolymers composed of hydrophobic block (LA) and hydrophilic chains (AA‐co‐EA) (see Figure 1).…”

Section: Resultsmentioning

confidence: 99%

“…Otherwise, some reports are also disclosed the preparation of associative polyelectrolytes employing the reversible deactivation radical polymerization techniques which conducted to the control on the polymerization process giving access to well‐structured polymers. In the last years, Jiménez‐Regalado et al reported an easy pathway for synthesizing well‐defined associating multiblock polyelectrolytes through the reversible addition‐fragmentation chain transfer (RAFT) polymerization 46,47 . The resultant polymers, containing a defined length hydrophobic block (polylauryl acrylate‐PLA or polystearyl methacrylate‐PSMA) distributed within the hydrophilic backbone (PAA‐ co ‐polyethyl acrylate [PEA]), were obtained through the solution polymerization using the both thermal and redox initiation.…”

Section: Introductionmentioning

confidence: 99%

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Impact of additives on the rheological properties of associating water‐soluble multiblock polyelectrolytes

Muñoz-López¹,

Thomas

Garcı́a-Cerda³

et al. 2021

J of Applied Polymer Sci

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The impact of additives on the rheological behavior of four associating water‐soluble multiblock polyelectrolytes previously synthesized via reversible addition‐fragmentation chain transfer (RAFT) polymerization was described. These polyelectrolytes contained different number of blocks ranged from 1 to 7 divided into hydrophilic and hydrophobic. The rheological analyses of polymers were performed at 25°C at a given concentration (0.1–15 wt%) in the presence of sodium chloride (NaCl) 0.1–0.5 M, sodium dodecyl sulfate (SDS) 2–10 mM or a mixture of both. Data demonstrated an increase in the viscosity of macroRAFT (ɳ = 0.002–9 Pa·s) and triblock copolymer‐TBC (ɳ = 0.003–0.04 Pa·s) versus the concentration of NaCl. Meanwhile, the viscosity of penta and heptablock copolymer exhibited a diminution whatever the (NaCl) used. Results from the rheological analyses of the associative polyelectrolytes at different (SDS) revealed that the viscosity of macroRAFT and triblock copolymer was kept constant in spite of the increment of the (SDS) while the viscosity of PBC and HBC displayed a pronounced diminution at the lower (SDS). Finally, the results from the rheological analyses of these polyelectrolytes versus a mixture of NaCl‐SDS showed a diminution in the viscosity of these solutions at any concentration of additives.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of additives on the rheological properties of associating water‐soluble multiblock polyelectrolytes

Muñoz-López¹,

Thomas

Garcı́a-Cerda³

et al. 2021

J of Applied Polymer Sci

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“…The viscosity is intensified slowly when the concentration is below CAC, but abruptly when the concentration is above CAC. This phenomenon is related to the intramolecular and intermolecular hydrophobic associations of hydrophobic groups [28]. When the PAAD concentration is low, the hydrophobic groups are dominated by intramolecular association, which leads to molecular chain shrinkage, a decrease of hydrodynamic dimensions, and thereby a decline of apparent viscosity.…”

Section: Effect Of Dpa Concentration On Apparent Viscositymentioning

confidence: 99%

Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer

et al. 2018

International Journal of Polymer Science

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A series of surfactive amphiphilic polymer PAADs were prepared from the copolymerization of sodium acrylate, dodecyl polyoxyethylene acrylate (DPA, a surfmer), and acrylamide under the action of a mixed initiating agent consisting of ammonium persulfate-sodium bisulfite/2,2′-azobis[2-(2-imidazolin-2-yl) propane] dihydrochloride. The aggregative behaviors of PAADs were explored by 13C nuclear magnetic resonance, a viscometer, and a surface tension instrument. It was found that the apparent viscosity and surface activity of PAADs were significantly improved by the increase of average sequence length of hydrophobic micro blocks, strong intermolecular hydrophobic association, or the formation of mixed micelles between hydrophobic micro blocks and micromolecular surface-active agent. The introduction of long-chain alkyls on molecular chains prolonged the average sequence length of hydrophobic micro blocks in molecular chains and enhanced the hydrophobic association between molecular chains and the tight arrangement of molecular chains on water surfaces, thereby increasing the surface activity. Moreover, the anionic monomer sodium acrylate on molecular chains, via electrostatic repulsion, promoted the conversion from intrachain association to intermolecular association and thereby facilitated the formation of dense interfacial films, enhancing the surface activity of water solutions. Then, the anion surfmer sodium dodecylbenzenesulfonate interacted with the hydrophobic micro blocks on the molecular chains to form mixed micelles, which accelerated the interchain association and enhanced the polymer surface activity. The novel polymeric micelle with higher viscosifying ability and surface activity was expected to be a promising oil drive agent for tertiary oil recovery.

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“…Under favor of controlled radical polymerization techniques, polymers with narrow molecular weight distribution can be produced in a desired molecular weight and desired molecular way in a controlled and repeatable manner. Synthesis of polymers, which have the star, comb, brush, worm, or graft architecture, is provided by molecular structure and size-controlled radical polymerization techniques [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Copolymer Synthesis with Redox Polymerization and Free Radical Polymerization Systems

Göktaş¹

2020

Redox

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In this study, block copolymer synthesis was evaluated by combining the redox polymerization technique and different polymerization techniques. By combining such different polymerization techniques, block copolymer synthesis has recently become an important part of polymer synthesis and polymer technology. The block/ graft copolymers synthesized by combining such different techniques contribute greatly to macromolecular engineering. In today's polymer synthesis, copolymer synthesis is of great interest in polymer technologies especially by using controlled radical polymerization and different polymerization techniques together. The success achieved in copolymer synthesis by using different polymerization techniques such as ATRP-ROP, RAFT-ROP, and ATRP-RAFT on the same step or different steps was achieved by combining redox polymerization with moderate polymerization conditions and controlled radical polymerization techniques as well.

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Synthesis of associative block copolymers electrolytes via RAFT polymerization

Cited by 11 publications

References 38 publications

Impact of additives on the rheological properties of associating water‐soluble multiblock polyelectrolytes

Impact of additives on the rheological properties of associating water‐soluble multiblock polyelectrolytes

Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer

Copolymer Synthesis with Redox Polymerization and Free Radical Polymerization Systems

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