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Thesis-1975-Ayub.pdf (6.09 MB)

Rheological investigation of a stabilised suspension of calcium carbonate

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thesis
posted on 2018-08-15, 11:13 authored by Akram B.C. Ayub
This thesis is a continuation of work started by Riley who observed anomalies in the rheological behaviour of concentrated suspensions of calcium carbonate stabilised by polyacrylate (Dispex N40) exposed to steady shear. The present work consists of a detailed investigation of the same system under condition of oscillatory shear from which non-linear behaviour was observed. Using the model of Green and Revlin and analysing the data by means of harmonic analysis the elastic and viscous moduli of the system were determined as the functions of strain, strain rate and concentration. The thesis reviews theories of linear and non-linear behaviour of dispersed systems and attempts to relate the results obtained to this theory. In order to do this measurements and calculations were made of the degree of the colloidal stabilities of the dispersions used.

Funding

National University of Malaysia (Bangi, Malaysia).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Publisher

© Akram Bin Che Ayub

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

1975

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.

Language

  • en

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