Copolymerization of sodium 2-acrylamido-2-methylpropane sulfonate with acrylamide and acrylonitrile in water: an effect of conditions on the compositional heterogeneity

Казанцев, О. А.; Shirshin, K. V.; Sivokhin, А. P.; Igolkin, A. V.; Goncharova, O. S.; Каморин, Д. М.

doi:10.1007/s10965-012-9886-5

Cited by 14 publications

(7 citation statements)

References 23 publications

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“…This concept was invoked, in combination with viscosimetry and NMR spectroscopy data, for rational explanation of spontaneous (co)polymerization of (meth)acrylamide and its derivatives in concentrated aqueous solutions, which is thought to proceed within supramolecular associates formed by acrylic monomers. [122][123][124][125][126] Association of reagents to "ickering" H-bonded pseudopolymers determine reaction order. A series of nucleophilic addition reactions with known mechanism (e.g., reactions of alcohols with isocyanates) are featured by a reaction order (with respect to nucleophile) that may vary considerably for the same reaction depending on reaction conditions.…”

Section: Known Examples Of Inuence Of Supramolecular Aggregation In ...mentioning

confidence: 99%

Chemical reactivity and solution structure: on the way to a paradigm shift?

Kononov

2015

RSC Adv.

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Section: Known Examples Of Inuence Of Supramolecular Aggregation In ...mentioning

confidence: 99%

Chemical reactivity and solution structure: on the way to a paradigm shift?

Kononov

2015

RSC Adv.

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“…27−29 In addition, copolymerizations between monomers that form prepolymerization aggregates also have been reported to demonstrate deviations from the Mayo−Lewis theory. 30,31 In all these cases, the unconventional behavior is attributed to emergent conditions that differentially influence the collision frequencies of various comonomer pairs. Such complexities may be expected to exert even more of an influence on the sequences of step-growth copolymers than on those of the chain-growth copolymers described above, but little work has been done, either experimentally or computationally, to investigate how emergent collective behaviors among the growing chains might influence the sequences of these step-growth copolymers.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Influence of Emergent and Self-Limiting Phase Separations among Nascent Oligomers on Polymer Sequences Formed during Irreversible Step-Growth Copolymerizations

Zhang

DuBay

2019

Macromolecules

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The sequential ordering of different monomers within synthetic copolymers is remarkably difficult to control. Our understanding of the determinants of and variations within copolymer sequences, even in simple step-growth reactions, remains limited. In this work, we perform simulations on a generic model of irreversible step-growth copolymerization between two types of monomers, A and B, in solution. Our results demonstrate that relatively weak attractions among nascent oligomers can exert considerable influence over the sequential arrangement of monomers in the final set of copolymers, even when identical reaction barriers exist between all monomer pairs. The observed effects cannot be fully accounted for within conventional polymerization theories due to a breakdown in Flory’s principle of equal reactivity that occurred in some cases. Nonetheless, these anomalous results can be readily explained by the Flory–Huggins theory, as a phase separation between A-rich and B-rich segments can emerge from and also be limited by the copolymerization process itself. This observation suggests that new routes for the one-pot synthesis of sequence-biased copolymers may be available through the coupling of step-growth copolymerizations and emergent phase separations.

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“…As the AAm molecule is shorter, it does not have steric impediment; therefore, it polymerizes faster. Akyüz et al studied the reactivity ratio of AAm and VP in solution, and they found a reactivity of 2.09 for AAm and 0.09 for VP; whereas, McCormick et al reported a reactivity of AAm and AMPSNa of 1.02 and 0.50, respectively.…”

Section: Resultsmentioning

confidence: 99%

Inverse emulsion free‐radical polymerization of acrylamide terpolymer for enhanced oil recovery application in harsh reservoir conditions

García-Uriostegui

Pineda-Torres

López-Ramírez

et al. 2017

Polymer Engineering & Sci

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A free-radical inverse emulsion polymerization formulation has been developed for preparation of acrylamide (AAm)/sodium 2-acrylamido-2-methylpropanesulfonate (AMPSNa)/N-vinylpyrrolidone (VP) terpolymers. An aqueous solution of a blend of monomers is emulsified in ndecane using Tween 85 (Tw85). Ammonium persulfate (APS) and dicumyl peroxide (DCP) were used as initiators for water and oil phases, respectively. The reactions were catalyzed by temperature and by a redox pair; the former is achieved at 608C and the latter by adding tetramethylethylenediamine (TEMED) and sodium bisulphite (BisNa) to activate the initiator in water and oil phase, respectively. The emulsion type, stability, conversion, and rate of polymerization were analyzed. The obtained terpolymer was characterized by elemental analysis, infrared spectroscopy (FTIR), 13 C nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), and rheology. Thermal catalyzed emulsion polymerization initiated with DCP showed the best performance as viscosity control agent and as polymeric precursor for in situ gel forming, for water mobility control and flow diversification, respectively. Both application for enhanced oil recovery purposes in harsh oil reservoir conditions are presented.

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Copolymerization of sodium 2-acrylamido-2-methylpropane sulfonate with acrylamide and acrylonitrile in water: an effect of conditions on the compositional heterogeneity

Cited by 14 publications

References 23 publications

Chemical reactivity and solution structure: on the way to a paradigm shift?

Chemical reactivity and solution structure: on the way to a paradigm shift?

Modeling the Influence of Emergent and Self-Limiting Phase Separations among Nascent Oligomers on Polymer Sequences Formed during Irreversible Step-Growth Copolymerizations

Inverse emulsion free‐radical polymerization of acrylamide terpolymer for enhanced oil recovery application in harsh reservoir conditions

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