Hydrophilic Interpolymer Associates as a Satellite Product of Reactions of Formation of Interpolymer Complexes

Сулейменов, И. Э.; Shaltykova, Dina; Sedláková, Zdeňka; Mun, Grigoriy A.; Semenyakin, Nikolay; Kaldybekov, Daulet B.; Obukhova, Polina

doi:10.4028/www.scientific.net/amm.467.58

Cited by 12 publications

(17 citation statements)

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“…When two polymers of different chemical nature are mixed in a common solvent, one of three options is realized, namely, compatibility (the system is a mixture of noninteracting components in which no phase separation is observed), incompatibility (accompanied by separation into phases, each of which is enriched in one of the polymers), or interaction (in this case, an interpolymer complex is formed in solution). For complexes of poly(acrylic acid) with PEO, poly(vinyl caprolactam), poly(vinyl glycol ethers), and cellulose ethers [6,22,23] in dilute solutions, the value of pH cr below which the IPC precipitates from solution was determined. Above pH cr , the complex exists in solution in the form of hydrophilic soluble associates.…”

Section: Resultsmentioning

confidence: 99%

Complexes Based on Poly(styrenesulfonic acid) and Poly(ethylene oxide)

et al. 2021

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Complexation in aqueous salt-free semidilute solutions of poly(styrenesulfonic acid) and poly(ethylene oxide) leading to the formation of soluble poly(styrenesulfonic acid)–poly(ethylene oxide) complexes is studied. It is shown that the interaction of the components in such complexes significantly weakens with an increase in temperature, as well as with a decrease in the poly(ethylene oxide) chain length. Using viscometry and light scattering, it is demonstrated that, in dilute aqueous and aqueous-saline solutions, no complexes are formed between poly(styrenesulfonic acid) and poly(ethylene oxide) and the system is a compatible mixture of the polymers in a common solvent.

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Section: Resultsmentioning

confidence: 99%

Complexes Based on Poly(styrenesulfonic acid) and Poly(ethylene oxide)

et al. 2021

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“…They have been shown to interact through hydrogen bonds with proton-acceptor polymers [9][10][11][12][13][14][15][16][17][18]. The increase in the hydrophobicity of the maleic acid comonomer determines the increase of the interpolymer interaction, the addition of hydrophobic forces leading to the precipitation of the hydrogen-bonded complexes and to the increase of the pH at which the complex dissociates [8,17].…”

Section: Introductionmentioning

confidence: 97%

“…It can also interact through hydrogen bonds with polymers containing carboxylic groups [8,9], being used in the layer by layer deposition for the construction of stimulisensitive thin films [10,11]. It should be mentioned that, from a series of proton-accepting polymers, PVCL is the one that formed the more stable complexes with poly(metacrylic acid) [8,11], the hydrophobic interactions in its case contributing to the strengthening of the complexes [12].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Interpolymer Complexation Between Poly(Vinylcaprolactam) and Poly(Maleic Acid-Alt-Styrene)

Popescu¹,

Suflet²,

Pelin³

2016

Journal of Macromolecular Science, Part B

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The interactions between two synthetic polymers used in biomedical applications, maleic acid-styrene copolymer (MAc-St) and poly(vinylcaprolactam) (PVCL), were investigated in dilute aqueous solution considering the influence of the pH, the added salt and the ratio between the components in the mixture. Hydrogen-bonding interactions between the COOH groups of MAc-St and the C=O groups of PVCL, together with hydrophobic interactions are involved in the formation of the interpolymer complex. The complex is insoluble below pH = 2.85 in aqueous solution, but the addition of NaCl enlarged the pH domain where the precipitation of the complex occurred. When the ratio between the polymers was varied, two maxima of the optical density were obtained: at a 1:1 ratio between the COOH and caprolactam groups, and also at a lower ratio (1:3). Other investigations, like Downloaded by [University of Lethbridge] at 19:13 21 June 20162 the measurements of the turbidity in-situ during mixing, and fluorescence, viscometric and potentiometric measurements were performed in order to understand these interactions. The phase separation of the thermosensitive poly(vinylcaprolactam) in the presence of MAc-St was also studied. The cloud point and the phase transition profile were found to be influenced by the amount of polyacid, as well as by the pH.

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“…From the received ratio and the expression (11) we can obtain an equation on the parameter G, describing the behavior of the system. We have …”

Section: Modelmentioning

confidence: 99%

“…An example of this is the formation of hydrophilic interpolymer associates (HIA, [10], [11]). This little-studied class of interpolymer reaction product is a network which exists in the dynamic mode, the bonds between the elements of which they are destroyed and formed again, being in dynamic equilibrium.…”

Section: Introductionmentioning

confidence: 99%