Document Type

Thesis

Date of Award

5-31-1987

Degree Name

Master of Science in Chemical Engineering - (M.S.)

Department

Chemical Engineering, Chemistry and Environmental Science

First Advisor

Chen-Chong Lin

Second Advisor

George Y. Lei

Third Advisor

Ching-Rong Huang

Abstract

A detailed modified mathematical model for particle size distribution in isothermal batch emulsion polymerization of Styrene and Vinyl acetate is proposed on the basis of the population balance approach in presence of several kinetic and mass transfer processes. This study is limited to Smith-Ewart's case II, which assumes instantaneous free radical termination within the polymer particles. Radical desor¬ption mechanism from polymer particles is included in the model and the desorption rate is formulated from the diffu¬sion theory which suggests that the rate co-efficient should be inversely proportional to the surface area of polymer particles.

Experimental runs are made using laser light scattering equipment to measure particle size distributions and are compared with the predicted results from the model proposed.

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