Layer thickness measurements are used to investigate polymer adsorption and possible conformations of adsorbed polymer. / In a first step, photon correlation spectroscopy (PCS) is used to monitor the layer thickness at different ratios of polyethylene oxide (PEO) per polystyrene (PS) latex spheres. Comparison of the polymer concentration at which the equilibrium layer thickness was attained with the concentration where the adsorption isotherm reached its plateau leads to a proposed three step adsorption process. Kinetic studies of the layer thickness build-up also support this mechanism. Polymer polydispersity and the effect of anchored end groups on layer thickness are found to be in agreement with theoretical predictions. / In a second step, a rheological investigation of PEO coated polystyrene-butadiene (PSB) latex spheres was performed. The influence of coating on the second virial coefficient was determined. Comparison of the layer thickness as measured by viscosity and PCS shows the relative importance of the latex polydispersity for the two methods.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.59265 |
| Date | January 1989 |
| Creators | Couture, Lorraine |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Chemistry.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001066963, proquestno: AAIMM63459, Theses scanned by UMI/ProQuest. |
Page generated in 0.0017 seconds