Colloid-polymer interactions in silica based particle systems

  • Emily J Manogg

Student thesis: Master's ThesisMaster of Science by Research (MScR)


This work falls into two distinct sets of experiments: First I attempted to observe the dynamics generated by the competing interactions of short range attraction and long range repulsion in what is known as mermaid interactions, in a solution of fluorescently labelled silica core shell particles and polyethylene oxide (PEO). Whilst I was able to observe some of the interactions and structures that I was looking for, I was unable to reliably reproduce these observations and due to the instability of the particles were unable to properly characterise those interactions that I did observe as being linked to the polymer volume fraction present. Second I created colloidal gels consisting of fluorescently labelled silica core shell particles and a polymer solution containing polyethylene oxide (PEO). I successfully observed the coarsening of the gel over an exponential time period after creation.
Date of Award6 Dec 2022
Original languageEnglish
Awarding Institution
  • University of Bristol
SupervisorAdrian C Barnes (Supervisor)

Cite this