A theory for the temperature effect on the chain length dependence of the diffusivity of oligomers. Issue 17 (20th April 2020)

• Record Type: Journal Article
• Authors: Wong, Chi Pui Jeremy; Choi, Phillip
• Is Part Of: Soft matter. Volume 16:Issue 17(2020)
• Page Start: 4283
• Page End: 4289
• Publication Date: 2020-04-20
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c9sm02505g
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : Temperature effect on the size dependence of the diffusivity of oligomers is explained by free volume theory. Abstract : 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 D cm ∼ N v 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.