Interpolyelectrolyte complexes: advances and prospects of application

Izumrudov, Vladimir A.; Мussabayeva, B.Kh.; Kassymova, Zhanar S.; Klivenko, A. N.; Orazzhanova, L. K.

doi:10.1070/rcr4877

Cited by 38 publications

(16 citation statements)

References 93 publications

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“…The efficacy of polymeric stabilizers is mainly determined by the characteristics of soil substrates and polymer binders 7–10 . As to the latters, amphiphilic stabilizers of dual nature with an affinity both to the hydrophilic and hydrophobic surfaces show a pronounced advantage over other polymers 11–14 …”

Section: Introductionmentioning

confidence: 99%

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Smagin

Панова

Ilyasov

et al. 2021

J of Applied Polymer Sci

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New synthetic soil conditioners for anti‐erosion protection of soils in the form of microgel copolymers of N‐isopropylacrylamide and acrylic acid (PAA#) and their interpolyelectrolyte complexes (IPEC#) with different surface charges are tested for optimization of water retention and porous structure in two samples of soil substrates. Water retention curves (WRCs) are used as a fundamental thermodynamic indicator of water holding capacity in soil substrates treated by new polymeric materials. Soil‐hydrological constants, as well as specific surface parameters and pore distribution curves are calculated from the WRCs using the van Genuhten model and the Voronin method in the author's modification. PAA# and anionic IPEC# with high swelling degree at a dose of 1% (by weight) increase field water capacity, available soil water range and specific surface area by 5–6 times for quartz sand, along with reorganizing its structure towards micropore dominance. For loamy sand, the same treatment was less effective with a twofold increase in field moisture capacity, double or triple increase of specific surface area, and an almost constant range of available soil water due to the strong increase of wilting point parameter. Weakly swelling linear polyacrylic acid and cationic IPEC# did not significantly affect properties of both mineral substrates.

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Section: Introductionmentioning

confidence: 99%

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Smagin

Панова

Ilyasov

et al. 2021

J of Applied Polymer Sci

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“…However, no visually insoluble precipitate was found. This is possible due to the predominance of soluble IPECs over insoluble ones, or soluble IPECs are products of incomplete interactions [ 57 , 70 ], due to different strengths of polyelectrolytes. In this case, the free units of the initial polyelectrolytes, which did not interact, act as hydrophilic fragments, contributing to the retention of IPEC particles in solution.…”

Section: Resultsmentioning

confidence: 99%

Self-Assembling Systems Based on Pillar[5]arenes and Surfactants for Encapsulation of Diagnostic Dye DAPI

Nazarova

Khannanov

Boldyrev

et al. 2021

IJMS

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In this paper, we report the development of the novel self-assembling systems based on oppositely charged Pillar[5]arenes and surfactants for encapsulation of diagnostic dye DAPI. For this purpose, the aggregation behavior of synthesized macrocycles and surfactants in the presence of Pillar[5]arenes functionalized by carboxy and ammonium terminal groups was studied. It has been demonstrated that by varying the molar ratio in Pillar[5]arene-surfactant systems, it is possible to obtain various types of supramolecular systems: host–guest complexes at equimolar ratio of Pillar[5]arene-surfactant and interpolyelectrolyte complexes (IPECs) are self-assembled materials formed in aqueous medium by two oppositely charged polyelectrolytes (macrocycle and surfactant micelles). It has been suggested that interaction of Pillar[5]arenes with surfactants is predominantly driven by cooperative electrostatic interactions. Synthesized stoichiometric and non-stoichiometric IPECs specifically interact with DAPI. UV-vis, luminescent spectroscopy and molecular docking data show the structural feature of dye-loaded IPEC and key role of the electrostatic, π–π-stacking, cation–π interactions in their formation. Such a strategy for the design of supramolecular Pillar[5]arene-surfactant systems will lead to a synergistic interaction of the two components and will allow specific interaction with the third component (drug or fluorescent tag), which will certainly be in demand in pharmaceuticals and biomedical diagnostics.

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“…The mechanism of IPEC soil structuring is discussed in Reference 31. It is expected that positively charged chitosan macromolecules interact with negatively charged soil particles (eg, silicates, aluminates, humates), while chitosan macromolecules are firmly fixed on the soil surface.…”

Section: Discussionmentioning

confidence: 99%

Soil structuring using interpolyelectrolyte complexes of water‐soluble polysaccharides

Klivenko

Orazzhanova

Мussabayeva

et al. 2020

Polymers for Advanced Techs

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Soil degradation is an important problem on a global scale. Suitable materials for its solution are interpolyelectrolyte complexes (IPEC) of biodegradable polymers. IPEC based on the oppositely charged pairs of biodegradable polymers-chitosan and sodium alginate (Ch-SA), chitosan and sodium carboxymethylcellulose (Ch-SC), and chitosan-gellan gum (Ch-GG) were prepared and studied using different physicochemical techniques (FTIR-spectroscopy, dynamic light scattering, conductometric and turbidimetric titration, and rheoviscometric measurements). Thin films of IPECs were prepared by pouring polymer solutions on a flat surface and subsequent evaporation of water. These films were tested using mechanical analysis. Young modulus of IPEC films increases in the following order: Ch-SC < Ch-GG < Ch-SA. Urban soil samples were sequentially treated with Ch solution and negatively charged polymer solution (SC, SA, GG). This technique of soil treatment leads to formation of IPEC within the soil surface layer. The soil structures and also soil treated with pure water and individual polymer solutions were also tested using mechanical analysis. It was found that the most durable structures are formed by IPEC based on Ch and SC. All the applied systems can be arranged in the following sequence in ascending order of the Young's modulus: GG < Ch < SA < Water < SC < Ch-GG < Ch-SA < Сh-SC. The IPEC based on biodegradable and biocompatible polymers of polysaccharide nature can be successfully used for soil structuring. These polymers significantly increase the mechanical strength of the soil without harmful effects to the environment. Among the studied systems, the Ch-SC system has the greatest structuring ability. These soil structuring agents can be applied for improving of the quality of urban and agricultural soils.

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Interpolyelectrolyte complexes: advances and prospects of application

Cited by 38 publications

References 93 publications

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Self-Assembling Systems Based on Pillar[5]arenes and Surfactants for Encapsulation of Diagnostic Dye DAPI

Soil structuring using interpolyelectrolyte complexes of water‐soluble polysaccharides

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