English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We apply our recently-developed mean-field 'SL-TS2' (two-stateSanchez-Lacombe) model to simultaneously describe dielectric alpha-relaxationtime and pressure-volume-temperature (PVT) data in four polymers (polystyrene,poly(methylmethacrylate), poly(vinyl acetate) and poly(cyclohexane methylacrylate)) and four organic molecular glass formers (ortho-terphenyl, glycerol,PCB-62, and PDE). Previously, it has been shown that for all eight materials,the Casalini-Roland thermodynamical scaling, /tau_{/alpha} =f(TV_{sp}^{/gamma}) (where T is temperature and V_{sp} is specific volume),(Casalini, R.; Roland, C. M. Phys. Rev. Lett. 2014, 113 (8), 85701), issatisfied. It has also been previously shown that the same scaling emergesnaturally (for sufficiently low pressures) within the 'SL-TS2' framework(Ginzburg, V. V. Soft Matter 2021, 17, 9094). Here, we fit the ambient pressurecurves for the relaxation time and the specific volume as functions oftemperature for the eight materials and observe a good agreement between theoryand experiment. We then use the Casalini-Roland scaling to convert thoseresults into 'master curves', thus enabling predictions of relaxation times andspecific volumes at elevated pressures. The proposed approach can be used todescribe other glass-forming materials, both low-molecular-weight andpolymeric.

soft matter

Combined Description of Pressure-Volume-Temperature and Dielectric  Relaxation of Several Polymeric and Low-Molecular-Weight Organic  Glass-Formers using 'SL-TS2' Mean-Field Approach