On November 11, 2021, Mei, Baicheng; Zhou, Yuxing; Schweizer, Kenneth S. published an article.Category: esters-buliding-blocks The title of the article was Long Wavelength Thermal Density Fluctuations in Molecular and Polymer Glass-Forming Liquids: Experimental and Theoretical Analysis under Isobaric Conditions. And the article contained the following:
We establish via an in-depth anal. of exptl. data that the dimensionless compressibility (proportional to the dimensionless amplitude of long wavelength thermal d. fluctuations) of one-component normal and supercooled liquids of chem. complex nonpolar and weakly polar mols. and polymers follows extremely well a surprisingly simple and general temperature dependence over an exceptionally wide range of pressures and temperatures A theor. basis for this behavior is shown to exist in the venerable van der Waals model and its more modern interpretations. Although associated hydrogen bonding (and to a lesser degree strongly polar) liquids display modestly more complex behavior, rather simple temperature and pressure dependences are also discovered. A new approach to collapse the temperature- and pressure-dependent dimensionless compressibility data onto a master curve is formulated that differs from the empirical thermodn. scaling approach. As a practical matter, we also find that the dimensionless compressibility scales well as an inverse power law with temperature with an exponent that is system dependent and decreases with pressure. At very high pressures and low temperatures, the thermal liquid behavior appears to approach (but not reach) a repulsion-dominated random close packing limit. All these findings are relevant to our recent theor. work on the problem of activated relaxation and vitrification of supercooled mol. and polymeric liquids The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Category: esters-buliding-blocks
The Article related to thermal density fluctuation mol polymer glass liquid isobaric, Physical Properties of Synthetic High Polymers: Physical Properties Of Polymers and other aspects.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics