A theory for the temperature effect on the chain length dependence of the diffusivity of oligomers
| Autor: | Phillip Choi, Chi Pui Jeremy Wong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Free volume theory chemistry.chemical_element Thermodynamics 02 engineering and technology General Chemistry Function (mathematics) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal diffusivity 01 natural sciences 0104 chemical sciences Chain length chemistry Exponent Soft matter 0210 nano-technology Carbon |
| Zdroj: | Soft Matter. 16:4283-4289 |
| ISSN: | 1744-6848 1744-683X |
| DOI: | 10.1039/c9sm02505g |
| Popis: | The effect of temperature on the chain length (N) dependence of the diffusivity of oligomers (with N = 10–60 carbon atoms) was theoretically studied using the free volume theory of Wong and Choi [Soft Matter, 2019, 15, 9300–9309] along with the experimental data of von Meerwall et al. [J. Chem. Phys., 1998, 108, 4299–4304]. Experimental data showed that Dcm ∼ Nv and that becomes less negative as temperature increases but is always stronger than −1 as obtained in the Rouse model. The theory successfully predicts the exponent v as a function of temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|