On predicting the solubility of polymers

Аскадский, А.А.; Matveev, Yu. I.; Matevosyan, M.S.

doi:10.1016/0032-3950(90)90362-a

Cited by 9 publications

(10 citation statements)

References 10 publications

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“…The volumetric thermal expansion coefficient for polymers in the rubbery state, α L , can be approxi mately determined from the familiar relationship (α L -α G )T g = 0.115 (24) For this purpose, it is necessary to initially calculate the Т g and α G values via Eqs. (17) and (23), respec tively.…”

Section: Volumetric Thermal Expansion Coefficientmentioning

confidence: 99%

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Methods for calculating the physical properties of polymers

Аскадский

2015

Ref. J. Chem.

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The approaches that derive the best predictions of physical properties of polymers from the chemical structure of their repeating unit are the van Krevelen, Bicerano, and Askadskii-Matveev. The potential of these three approaches is analyzed. All of the approaches are computerized and allow online predictions to be made. The PDTools and SYNTHIA programs are briefly overviewed, and the Cascade software (developed at the Nesmeyanov Institute of Organoelement Compounds) is described in detail. All of the approaches and the corresponding computer programs make it possible to estimate over 120 physical properties of polymers, including their volumetric, thermal, mechanical, thermophysical, optical, dielectric, and barrier properties. Particular attention is focused on the solu bility and miscibility of polymers and on the properties of copolymers, polymer blends, and nanocom posites. The Cascade software provides the means to carry out computer syntheses of polymers with preset properties, the intervals of which are input by the user, and to calculate the dependences of these properties on temperature, plasticizer and nanoparticle concentrations, and nanoparticle size and shape.

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Section: Volumetric Thermal Expansion Coefficientmentioning

confidence: 99%

“…We analyzed [23,24] cases in which the polymer swells before dissolving and in which the polymer dis solves almost without swelling.…”

Section: Criterion For Solubility Of Polymers In Organic Solventsmentioning

confidence: 99%

Methods for calculating the physical properties of polymers

Аскадский

2015

Ref. J. Chem.

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“…32 We employed this criterion in order to do a theoretical analysis of the miscibility between Dx and related anhydridecontaining copolymers. The initial characteristics necessary for the estimation of the physical characteristics of synthesized copolymers were calculated for the repeat units of the synthesized copolymers using the above-mentioned formulas, and the results are given in Table III.…”

Section: Askadskii's Solubility Criterionmentioning

confidence: 99%

Experimental and theoretical approaches to investigating the miscibility of anhydride‐containing copolymers and dextran

Can

Barsbay

Güner

et al. 2006

J of Applied Polymer Sci

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The miscibility behavior of dextran (Dx) with synthesized functional binary poly(citraconic anhydrideacrylamide) (poly(CA-alt-AAm) and ternary poly(citraconic anhydride-acrylamide-vinyl acetate) (poly(CA-co-AAm-co-VA) copolymers was investigated in dilute aqueous solutions by viscometry and in a solid state by Fourier transform infrared (FTIR) spectroscopy. The relative viscosities of each polymer and their blends with Dx/related copolymer ratios of 20 : 80, 50 : 50, and 80 : 20 were measured at body temperature, 378C, in bidistilled and deionized water. Starting with the classical Huggins equation, results of the viscosity measurements of each parent polymer and their blends were interpreted in terms of miscibility parameters:Dk, Db, a, b, DB, and m. Based on the sign convention used with these criteria, the miscibility between Dx and related copolymers was found to increase with the weight fraction of Dx in the blends and with the number of AAm units in the copolymer composition. From FTIR spectral analysis, supporting results were achieved that explained the interactions between Dx and the copolymers. Miscibility behavior was also investigated theoretically with Askadskii's miscibility criterion, and the theoretical calculations provided strong evidence supporting the experimental results.

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“…Since the values of the left sides of the criteria ( 6) and (7) are larger than those of their right sides, polymers 1 and 2 are completely incompatible.…”

Section: Criteria For the Compatibility Of Polymersmentioning

confidence: 99%

“…However, as indicated by calculations using the criterion (2), no `solubility' of the second polymer in the first polymer should occur on introduction of the polymer 2 into the polymer 1, i.e., inequality (7) holds. Usually, compatibility of two polymers is judged by the glass transition temperature of a blend.…”

Section: Criteria For the Compatibility Of Polymersmentioning

confidence: 99%

The effect of strong intermolecular and chemical interactions on the compatibility of polymers

Askadskii¹

1999

Russ. Chem. Rev.

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On predicting the solubility of polymers

Cited by 9 publications

References 10 publications

Methods for calculating the physical properties of polymers

Methods for calculating the physical properties of polymers

Experimental and theoretical approaches to investigating the miscibility of anhydride‐containing copolymers and dextran

The effect of strong intermolecular and chemical interactions on the compatibility of polymers

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