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Influence of Energy on Solvent Diffusion in Polymer/Solvent Systems 被引量:1
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作者 胡慧俊 蒋文华 韩世钧 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第4期459-463,共5页
The Vrentas-Duda free-volume theory has been extensively used tocorrelated or predict the solvent diffusion coefficient of apolymer/solvent system. The energy term in the free volume diffusionequation is difficult to ... The Vrentas-Duda free-volume theory has been extensively used tocorrelated or predict the solvent diffusion coefficient of apolymer/solvent system. The energy term in the free volume diffusionequation is difficult to estimate, so the energy term was usuallyneglected in previous predictive versions of the free volumediffusion coefficient equation. Recent studies show that the energyeffect is very important even above the glass transition temperatureof the system. In this paper, a new evaluating method of the energyterm is proposed, that is, the diffusion energy at different solventconcentrations is assumed to be a linear function of the solventdiffusion energy in pure solvents and that in polymers under thecondition that the solvent in infinite dilution. 展开更多
关键词 solvent diffusion in polymer PREDICTION energy effect
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Thermodynamics of Systems: Photopolymers-Low-Molecular Liquids
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作者 Shpineva M. A Konyukhov Valery Yuryevich 《Journal of Chemistry and Chemical Engineering》 2013年第5期462-467,共6页
Photopolymers (printing flexoforms) during their operation interact with solvents and properties and ultimately reduces printing quality. A purpose of the work was to study the photopolymer with low-molecular liquid... Photopolymers (printing flexoforms) during their operation interact with solvents and properties and ultimately reduces printing quality. A purpose of the work was to study the photopolymer with low-molecular liquids by two independent methods (chromatography and mathematical model of the process the thermodynamic properties and Flory-Huggins polymer-solvent systems. swell. Swelling changes the elastic thermodynamics of interaction of swelling in solvents). By using a parameters were determined for 展开更多
关键词 Flexoform SWELLING gas chromatography Flory-Huggins criteria thermodynamic properties.
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