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The rheology and processing of a concentrated cellulose acetate solution

✍ Scribed by W.-K. Wee; M.R. Mackley

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
396 KB
Volume
53
Category
Article
ISSN
0009-2509

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✦ Synopsis

This paper develops an experimental protocol for the characterisation of a concentrated cellulose acetate solution using a viscoelastic integral constitutive equation. Rheological parameters are obtained from both a Rheometrics RDSII spectrometer and a newly developed Multipass Rheometer (MPR). Reasonable self-consistency is found between machines and model. A numerical simulation of the MPR processing flow is carried out using Polyflow and the integral constitutive equation and the results are compared with the experimental data. In general, the fit is found to be good and we conclude that the modelling approach adopted here is capable of predicting the viscoelastic processing flow of concentrated polymer solutions with reasonable accuracy. The MPR is also shown to be a useful machine for the study of systems containing volatile fluids.

πŸ“œ SIMILAR VOLUMES

On the structure of concentrated cellulo
On the structure of concentrated cellulose acetate solutions
✍ B. Kunst; Z. Vajnaht πŸ“‚ Article πŸ“… 1977 πŸ› John Wiley and Sons 🌐 English βš– 572 KB

## Abstract The supermolecular structure of cellulose acetate membrane casting solutions was determined by measuring their rheological behavior. The method was applied to both clear and turbid casting solutions. The resulting data on activation energy of viscous flow are shown to depend on the cell