Quantifying separation energy with a modified Capillary Break-up Extensional Rheometer (CaBER) to study polymer solutions
Source abstract
Abstract
A Capillary Break-up Extensional Rheometer (CaBER) was modified to enable measurements of the axial force in combination with the related displacement. This makes it possible to determine the separation energy WsepN, the tackiness, of a polymer solution between two parallel plates with the CaBER. Separation energies of solutions of linear polystyrene, comb polystyrene and linear poly(methyl methacrylate) in dimethylformamide were measured as model systems. For linear polymers at a critical polymer concentration, there was a drastic change in slope of the separation energy WsepNc. This critical concentration was shown to be the minimum concentration at which continuous bead-free fibers could be electrospun.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Rheology and Fluid Dynamics Studies · Electrospun Nanofibers in Biomedical Applications · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
References (45)
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