Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/12452

Title: Chemical modification of perfluoropolyether oligomers and effects on compatability and properties of epoxy resins
Authors: Zitouni, Faiza
Issue Date: 1992
Publisher: © F. Zitouni
Abstract: The incorporation of fluorine in epoxy resins has been the focus of research for many years, aiming to reduce water absorption and to improve the degradation resistance in hot-moist environments. To this end resins have been synthesised from fluorinated monomers while crosslinking was induced by conventional hardeners. In the present work conventional diglycidyl ether of bisphenol A epoxy resins were modified by the addition of small amounts of perfluoropolyether oligomers containing functional groups at the chain ends. Compatibilisation of these oligomers in epoxy resins was achieved through end-capping and chain extension reactions. Such modifications of the fluoroligomers only affect marginally the viscosity of the resin mixture. Using hexahydrophthalic anhydride as the main hardener and through selective curing procedures the morphology of the crosslinked resins was controlled to. produce either transparent formulations, consisting essentially of an IPN monophase structure, or opaque systems containing precipitated spherical particles. Perfect adhesion is exhibited at the particle interface with the matrix, i.e. there was a complete absence of de bonding during fracture[continued]...
Description: A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.
URI: https://dspace.lboro.ac.uk/2134/12452
Appears in Collections:PhD Theses (Materials)

Files associated with this item:

File Description SizeFormat
Thesis-1992-Zitouni.pdf3.84 MBAdobe PDFView/Open
Form-1992-Zitouni.pdf34.95 kBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.