Polystyrene-co-4-hydroxystyrene ionomers (3.0-22 mol %) were synthesized via neutralization of demethylated polystyrene-co-4-methoxystyrene. The polystyrene-co-4-hydroxymethylstyrene ionomers (2.5-19.4 mol %) were prepared from the partial chloromethylation of polystyrene, followed by esterification, saponification, and finally neutralization. The physical properties of the ionomers as well as their nonionic precursors were studied by calorimetry, torsion pendulum and small-angle X-ray scattering (SAXS). Stress relaxation studies of the ionomers were also done. While evidence for ion aggregation was obtained for the styrene-4-hydroxystyrene ionomers from SAXS and torsion pendulum studies, no firm evidence was obtained for the styrene-4-hydroxymethylstyrene ionomers. Stress relaxation studies on both systems, however, showed failure of time-temperature superposition at high ion contents, indicating that these systems are both thermorheologically complex. The glass transition temperature of the matrix, the size of the ionic aggregates and the strengths of the ionic interactions within these large aggregates were related to the type and position of the ionic group.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.71957 |
| Date | January 1985 |
| Creators | Clas, Sophie-Dorothée. |
| 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 | Doctor of Philosophy (Department of Chemistry.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000219015, proquestno: AAINL20816, Theses scanned by UMI/ProQuest. |
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