2019/10/10 by Dave E. Dunstan, Dunstan, Dave E., Dalton J. E. Harvie +1
Chemical Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Polymer Nanocomposites and Properties #Polymer crystallization and properties #Rheology and Fluid Dynamics Studies #Soft Condensed Matter (cond-mat.soft) #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.1910.05147
11 pages, 7 equations, 2 Figures, 1 table and 58 references. arXiv admin note: text overlap with arXiv:1806.00963
openalex publication_date 2019/10/10 · arxiv created 2019/11/21 · arxiv updated 2019/11/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Shear induced particle pressure has been measured and modelled for concentrated suspensions of particles. Importantly, the significance of the shear induced particle pressure has not been recognized in polymer rheology. The shear induced particle pressure results in an inward pressure on the polymer chains resulting in a shear dependent compressive force. The analytical form of the force balance equations that incorporate the effect of shear induced particle pressure predict a reduced polymer blob size and reducing viscosity with increasing shear rate as has been observed experimentally. Power law behavior is found for the viscosity in accord with the general behavior observed for the rheology of concentrated polymer solutions and melts. Differing powers are found for the behavior depending on the concentration regime.