Thesis-2004-Sim.pdf (4.59 MB)
Download fileModifications of polyimides and polyimide–inorganic oxide hybrids with perfluoroether oligomers for use as matrices for carbon-fibre composites
thesis
posted on 2018-10-31, 10:09 authored by Seok-Hoon SimThe performance of a polyimide derived from a low molecular weight polyamic acid
(Skybond 703) and the corresponding polyimide–silica hybrids, used as matrices for
Carbon-fibre composites, was evaluated. The study involved the incorporation of
telechelically modified perfluoroether oligomers into the resin systems.
Telechelic modifications of the hydroxyl-terminated perfluoroether oligomer were
carried out in order to achieve the required compatibility with the polyimide phase
through grafting reactions with the polyamic acid precursor. In the case of hybrids, the
compatibility requirements were extended also to the prehydrolysed alkoxysilane
solution added to the polyamic acid mixtures. The latter was achieved with the
incorporation of a silane coupling agent (γ-glycidyloxypropyltrimethoxysilane), which
resulted in the formation of nano-scale silica domains in the polyimide. [Continues.]
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Publisher
© S.H. SimPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2004Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en