Synthesis, structure, and properties of anhydrous organic-inorganic proton-exchange membranes based on sulfonated derivatives of octahedral oligosilsesquioxanes and α,ω-di(triethoxysilyl) oligo(oxyethylene urethane urea)

Shevchenko, V. V.; Stryutskii, A. V.; Bliznyuk, Valery N.; Klimenko, N. S.; Shevchuk, A. D.; Lysenkov, Е.А.; Gomza, Yu. P.

doi:10.1134/s1560090414020158

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…Moreover, better retention properties facilitate higher membrane stability. With this approach in mind, Shevchenko’s group recently suggested an alternative route in which the cross-linked membrane was doped with a branched POSS-OIL compound bearing sulfo groups . The synthesized membranes were thermally stable up to 219 °C, and maximum values of the ionic conductivity of 1.03 × 10 –4 S cm –1 were attained at 120 °C under anhydrous conditions with a dopant concentration of 50%.…”

Section: Emerging Applicationsmentioning

confidence: 99%

Architecture, Assembly, and Emerging Applications of Branched Functional Polyelectrolytes and Poly(ionic liquid)s

Ledin

Shevchenko

et al. 2015

ACS Appl. Mater. Interfaces

130

101

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Branched polyelectrolytes with cylindrical brush, dendritic, hyperbranched, grafted, and star architectures bearing ionizable functional groups possess complex and unique assembly behavior in solution at surfaces and interfaces as compared to their linear counterparts. This review summarizes the recent developments in the introduction of various architectures and understanding of the assembly behavior of branched polyelectrolytes with a focus on functional polyelectrolytes and poly(ionic liquid)s with responsive properties. The branched polyelectrolytes and poly(ionic liquid)s interact electrostatically with small molecules, linear polyelectrolytes, or other branched polyelectrolytes to form assemblies of hybrid nanoparticles, multilayer thin films, responsive microcapsules, and ion-conductive membranes. The branched structures lead to unconventional assemblies and complex hierarchical structures with responsive properties as summarized in this review. Finally, we discuss prospectives for emerging applications of branched polyelectrolytes and poly(ionic liquid)s for energy harvesting and storage, controlled delivery, chemical microreactors, adaptive surfaces, and ion-exchange membranes.

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Section: Emerging Applicationsmentioning

confidence: 99%

Architecture, Assembly, and Emerging Applications of Branched Functional Polyelectrolytes and Poly(ionic liquid)s

Ledin

Shevchenko

et al. 2015

ACS Appl. Mater. Interfaces

130

101

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“…However, the use of ceramic-derived materials as matrix cause to low thermal conductivity, [1][2][3] low oxi-dation resistance, 4,5 low density, and many features like these. [6][7][8] So that, different composites can be prepared between a hybrid molecule called as POSS (polyhedral oligomeric silsesquioxane) and commercial polymers like ε-caprolactone by using several methods (radical polymerization, click chemistry, controlled polymerization techniques, and ring opening polymerization). POSS is a relatively new type of organic-inorganic hybrid molecules.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Investigation of Thermal Properties of POSS Containing Graphene/Polycaprolactone Composites

Saltan¹,

Akat²

2016

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In this study, it has been demonstrated that polyhedral oligomeric silsesquioxane (POSS) based graphene-polycaprolactone nanocomposites (POSS-G-PCL) were successfully prepared by using ring opening polymerization method. For this purpose, first, graphene-POSS composite (GP) was synthesized with graphene oxide and aminopropyllsobutyl POSS (POSS-NH 2). Second, POSS containing graphene-polycaprolactone composite (PCL-G-POSS) was synthesized by using ε-caprolactone, graphene-POSS, and Tin(II) octanoate as initiator in DMF at 110 o C. This reaction was repeated without of solvent (PCL-G-POSS in bulk) and by using different amount of caprolactone (PCL*-G-POSS). The synthesized composites and polymers were characterized by nuclear magnetic resonance (1 H NMR), gel permeation chromatography (GPC), and fourier transform infrared spectroscopy (FTIR). Thermal behaviors of molecules were analyzed by thermogravimetry (TG). The surface morphologies of composites were analyzed by scanning electron microscope (SEM). The results of TG and GPC analyses showed that the thermal stability and molecular weight of the composites were increased with the addition of POSS.

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“…The global unified exponential-power functions method developed by Beaucage is used to determine the real size of the fractal aggregates [14]. This method is used to effectively diagnose different types of nanosystems by modeling scattering by multilevel fractal structures [21]. The structural parameters of the material are determined by fitting the model curves to the studied ones, such as the type of fractal aggregates (mass or surface), fractal dimension, aggregate sizes, and the number of lower-level primary particles in higher-scale fractal aggregates.…”

mentioning

confidence: 99%

Influence of 3-Glycidoxypropyltriethoxysilane on the Structural Organization of Epoxy-Silica Nanocomposites

et al. 2021

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The structural properties of epoxy-silica nanocomposites of anhydride curing synthesized by the sol-gel method were studied using small-angle X-ray scattering and electron microscopy. It was shown that the aggregation processes change significantly during the formation of sols of silica nanoparticles (SP) by using 3-glycidoxypropyltriethoxysilane (GPTES) in the presence and absence of an epoxy oligomer in the system. The fractal aggregate types of each structural level are identified and their sizes are determined by the fractal analysis. It was found that there is a two-level and three-level fractal organization for GPTES-based sols, formed in the presence of an epoxy oligomer, depending on the content of SP. At the same time, aggregates with an average size of 10-11 nm are formed at the first structural level; SP form aggregates with an average size of 65-70 nm at the second level, while the size of the third-level aggregates is more than 250 nm.

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Synthesis, structure, and properties of anhydrous organic-inorganic proton-exchange membranes based on sulfonated derivatives of octahedral oligosilsesquioxanes and α,ω-di(triethoxysilyl) oligo(oxyethylene urethane urea)

Cited by 10 publications

References 28 publications

Architecture, Assembly, and Emerging Applications of Branched Functional Polyelectrolytes and Poly(ionic liquid)s

Architecture, Assembly, and Emerging Applications of Branched Functional Polyelectrolytes and Poly(ionic liquid)s

Synthesis, Characterization and Investigation of Thermal Properties of POSS Containing Graphene/Polycaprolactone Composites

Influence of 3-Glycidoxypropyltriethoxysilane on the Structural Organization of Epoxy-Silica Nanocomposites

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