A Method for Prediction of Water Permeability through Polymers

Аскадский, А.А.; Afans’ev, Egor; Matseevich, T. A.; Попова, М. Н.; Кондращенко, В. И.; Qi, Shi

doi:10.4028/www.scientific.net/amr.1033-1034.939

Cited by 19 publications

(41 citation statements)

References 22 publications

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“…The values of the van der Waals radii were taken from the reference. 13 The model of the repeating unit was placed in a box with the parameters equal to the maximum size of the repeating unit. By the method Monte Carlo, we designated the number of random points m that fall into repeating unit and the total number of tests M .…”

Section: Calculation Methodsmentioning

confidence: 99%

Effect of polymers chemical structure on the membrane characteristics

Ronova

Kryuchkova

Yablokova

et al. 2016

High Performance Polymers

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The comparative analysis of gas transport properties and conformational parameters of membranes obtained from two polyimides and polysulfone was made. It was shown that the introduction of a sulfone group instead of a methylene group in the amine component of polyimide leads to an increase in glass transition temperature and of polymer membrane permeability coefficient and a reduction in selectivity. Also it was demonstrated that the solvent used during the preparation of polymer membranes had a significant influence on their gas transport characteristics.

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Section: Calculation Methodsmentioning

confidence: 99%

Effect of polymers chemical structure on the membrane characteristics

Ronova

Kryuchkova

Yablokova

et al. 2016

High Performance Polymers

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“…If the process is limited by the diffusion rate, the kernel T 2 (τ) comes into play [12][13][14][15]:…”

mentioning

confidence: 99%

An Investigation of the Mechanical Properties of Nanocomposites Based on Polyepoxy Isocyanurates and Monodispersed Carbon Nanoparticles

Galitseiskii

Петунова

Афанасьев

et al. 2018

International Polymer Science and Technology

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Nanocomposites based on polyepoxy isocyanurate crosslinked systems of different chemical composition were produced in order to investigate the specific effect of technical nanocarbon on each individual polymer network. Monodispersed carbon particles were produced by methane chlorination conducted in a continuous reactor in a non-equilibrium regime with a chlorine deficit. The dependences of the forced elasticity limit, stress relaxation, etc., on the degree of filling were analysed. The possibility of interphase interaction between a specific polyepoxy isocyanurate network and ‘nanofiller’ was investigated. It was shown that a fairly low concentration (1 wt%) of monodispersed carbon particles of 20–25 nm size leads to a 25–30% increase in the elastic modulus and forced elasticity limit; similarly, the relaxation characteristics are also increased. It was established that improvement in a number of such properties is connected with the greater influence of interphase interactions between the polymer and filler on account of the large surface layer area.

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“…This must be allowed for by introducing an additional term into the equation for calculating the glass transition temperature, T g . For linear polymers (which, in contrast to polymer networks, are capable of flow) we use the following equation [2][3][4][5][6][7][8]: (1) where is the van der Waals volume of a repeating unit of the polymer, is the set of atomic constants for a repeating unit, and β is the number of polar groups localised on the surface of the nanoparticles per repeating unit of the polymer.…”

mentioning

confidence: 99%

“…The quantity M s is calculated using the following equation [2,3] Let us calculate the dependences of the glass transition temperature on all the parameters of the system (these parameters can be found in Table 1; polymer -PVC).…”

mentioning

confidence: 99%

The Influence of the Chemical Composition and Concentration of Components of a Polymer/Nanoparticle Mixture on their Flow Temperature

Matseevich

Коврига

Аскадский

2017

International Polymer Science and Technology

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A scheme has been developed for calculating the flow temperature, Tf, of a system containing a polymer and nanoparticles. The chemical structure of the polymer and nanoparticles, the intermolecular interaction between polymer and nanoparticle when the latter is modified with polar groups, the van der Waals volume and the molecular weight of the polymer, and the concentration and shape of the nanoparticles were taken into account. The dependences of Tf on the radius of the nanoparticles, their concentration, and the number of polar groups grafted to their surface have been established. The calculation scheme has been computerised and is a separate option in the ‘Kaskad’ computer program developed by INEOS.

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A Method for Prediction of Water Permeability through Polymers

Cited by 19 publications

References 22 publications

Effect of polymers chemical structure on the membrane characteristics

Effect of polymers chemical structure on the membrane characteristics

An Investigation of the Mechanical Properties of Nanocomposites Based on Polyepoxy Isocyanurates and Monodispersed Carbon Nanoparticles

The Influence of the Chemical Composition and Concentration of Components of a Polymer/Nanoparticle Mixture on their Flow Temperature

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