Poly(styrene), poly(methyl methacrylate) and poly(butyl acrylate) dispersions
have been prepared in methanolic media using partially hydrolysed poly(vinyl
acetate)s, poly(vinyl pyrrolidone), poly(ethylene oxide) and poly(vinyl acetate) as
steric stabilisers. The stabiliser concentration, molar mass of the stabiliser, initial
solubility parameter of the continuous phase and initiator concentration were
varied to investigate the effect that they had on the size of the particles produced.
The initial solubility parameter of the continuous phase was varied by using
methanol/water mixtures with different compositions. Particle size analysis was
carried out by transmission electron microscopy(TEM), in association with image
analysis, and laser diffraction particle size analysis. The results showed that
dispersions had been produced with particle sizes from O.2-5.4µm in diameter for
poly(styrene), from O.I-1.5lµm in diameter for poly(methyl methacrylate) and
from O.2-1.8µm in diameter for poly(butyl acrylate). The standard deviation
values calculated for the particle size measurements from the dispersions showed
that a large number of the dispersions had narrow, or very narrow, particle size
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.