A new simple method for the synthesis of novel hydroxy substituted 1,2-diphenylcyclopropanes was developed. Mono and dihydroxysubstituted-1,2-diphenylcyclopropanes were prepared by base-catalyzed decomposition of the corresponding hydroxy substituted 3,5-diphenyl-2-pyrazolines which were the products of the reaction between hydroxychalcones and hydrazine monohydrate. Some biphenols and activated aromatic difluorides containing the ethylene, chalcone and pyrazoline groups were prepared by novel, simple methods employing readily available starting materials and reagents. The monomers were used to prepare thermally cross-linkable polymers. New dianhydrides containing the 1,2-diphenylcyclopropane or diphenylacetylene group were synthesized from 1,2-bis(4-hydroxyphenyl)cyclopropane or bis(3-hydroxyphenyl)acetylene. / Subsequently, new types of poly(aryl ether sulfone)s, poly(aryl ether ketone)s, polyesters, polyformals, polyimides, poly(phenylene oxide)s and cyclic aryl ether oligomers containing the internal trans-1,2-diphenylcyclopropane, ethylene, chalcone, epoxide and 2-pyrazoline moieties were synthesized from these monomers by condensation polymerization reactions. Characterization of and cross-linking studies on these polymers were carried out utilizing DSC, TGA, TMA, GPC and NMR. The prepared polymers are high molecular weight, amorphous and soluble in common organic solvents. / The polymers can be thermally cross-linked. The glass transition temperatures of the polymers increased and their solvent resistance was improved significantly after curing. Thermogravimetric analyses showed that no significant weight loss accompanied the cross-linking reactions.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.29026 |
| Date | January 1995 |
| Creators | Gao, Chunping |
| Contributors | Hay, A. S. (advisor) |
| 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: 001476622, proquestno: NN08102, Theses scanned by UMI/ProQuest. |
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