Nanostructure of xanthan networks

Chalykh, A.Ye.; Матвеев, В. В.; Muravlev, D. A.; Mityuk, D. Yu.; Philippova, Olga E.

doi:10.1134/s1995078017010037

Cited by 12 publications

(9 citation statements)

References 25 publications

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“…The study of solubility and interdiffusion in binary (PSU–EO, PES–EO) and three-component systems—TPs–adducts—was carried out using method of optical interferometry on an ODA-2 IPCE diffusiometer (IPCE, Moscow, Russia) [ 23 ]. A helium–neon laser (λ = 632.8 nm) was used as a light source.…”

Section: Methodsmentioning

confidence: 99%

Phase Equilibrium, Morphology, and Physico-Mechanics in Epoxy–Thermoplastic Mixtures with Upper and Lower Critical Solution Temperatures

et al. 2020

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The mutual solubility of epoxy oligomer with polysulfone (PSU) and polyethersulfone (PES) was studied by optical interferometry. Additionally, phase diagrams (PDs) were plotted and their evolution during the curing process was shown. The phase structures of modified hardened systems, as well as their tensile strengths, elastic moduli, and crack resistance, have been studied by scanning electron microscopy and physico-mechanical techniques. The effect of initial components’ mutual solubility on the phase structure and, subsequently, on the physico-mechanical properties of the composite material is shown. Differences in the structure and properties of the cured modified compositions depending on the type of PD (with Upper Critical Solution Temperature (UCST) for PSU and Lower Critical Solution Temperature (LCST) for PES) of the initial components are shown.

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Section: Methodsmentioning

confidence: 99%

Phase Equilibrium, Morphology, and Physico-Mechanics in Epoxy–Thermoplastic Mixtures with Upper and Lower Critical Solution Temperatures

et al. 2020

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“…The study of solubility and interdiffusion in binary (PSU–FGE, EO-FGE) systems was carried out using method of optical interferometry on an ODA-2 IPCE diffusiometer (IPCE RAS, Moscow, Russia) [ 37 ]. A helium–neon laser (λ = 632.8 nm) was used as a light source.…”

Section: Methodsmentioning

confidence: 99%

Structure and Properties of Epoxy Polysulfone Systems Modified with an Active Diluent

et al. 2022

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An epoxy resin modified with polysulfone (PSU) and active diluent furfuryl glycidyl ether (FGE) was studied. Triethanolaminotitanate (TEAT) and iso-methyltetrahydrophthalic anhydride (iso-MTHPA) were used as curing agents. It is shown that during the curing of initially homogeneous mixtures, heterogeneous structures are formed. The type of these structures depends on the concentration of active diluent and the type of hardener. The physico-mechanical properties of the hybrid matrices are determined by the structure formed. The maximum resistance to a growing crack is provided by structures with a thermoplastic-enriched matrix-interpenetrating structures. The main mechanism for increasing the energy of crack propagation is associated with the implementation of microplasticity of extended phases enriched in polysulfone and their involvement in the fracture process.

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“…All measurements were carried out on an ODA-2 IPCE diffusiometer (IPCE RAS, Moscow, Russia) [ 27 ] in the temperature range from 300 to 440 K. A helium-neon laser (λ = 632.8 nm) was used as a light source. Methods of processing of the interferograms, interdiffusion zones, and phase diagrams construction did not differ from those described earlier [ 27 , 28 , 29 ].…”

Section: Methodsmentioning

confidence: 99%

Phase Equilibrium and Interdiffusion in Blends of Polystyrene with Polyacrylates

Nikulova

Chalykh

2021

Polymers

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The solubility and interdiffusion of polystyrene (PS) with polymethyl acrylate (PMA), polyethyl acrylate (PEA), polybutyl acrylate (PBA), and polyethylhexyl acrylate (PEHA) have been studied by the optical interferometry method. Phase state diagrams are plotted. It is shown that they are characterized by the upper critical solution temperatures (UCST), which are localized in the temperature range above 450 K. Pair interaction parameters and their temperature dependences are determined and analyzed. Extrapolation of the temperature dependence of the interaction parameter was used to construct the dome of binodal curves and determine the spinodal curves in the framework of the Flory–Huggins theory. The diffusion coefficients of polystyrene into polyacrylates and polyacrylates into polystyrene are calculated. The dependences of the interdiffusion coefficients on the concentration, temperature, polystyrene molecular weight, and the number of carbons in the side chain of polyacrylate are analyzed. The numerical values of the interdiffusion coefficients of PS-1 into polyacrylates at 433 K change as −8.5 → −6.7 → −6.4 in the homologous series PMA → PEA → PBA. The coefficients of friction are calculated and the effect of change in the matrix structure on the diffusion of polystyrene in them is estimated.

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Nanostructure of xanthan networks

Cited by 12 publications

References 25 publications

Phase Equilibrium, Morphology, and Physico-Mechanics in Epoxy–Thermoplastic Mixtures with Upper and Lower Critical Solution Temperatures

Phase Equilibrium, Morphology, and Physico-Mechanics in Epoxy–Thermoplastic Mixtures with Upper and Lower Critical Solution Temperatures

Structure and Properties of Epoxy Polysulfone Systems Modified with an Active Diluent

Phase Equilibrium and Interdiffusion in Blends of Polystyrene with Polyacrylates

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