Thesis-2002-Matsuse.pdf (12.48 MB)
Morphology and damping properties of triblock copolymer physical gels
thesisposted on 2018-07-04, 10:08 authored by Takahiro Matsuse
This study was conducted in order to develop damping materials for practical applications, such as insulators for compact disk players and hard drive disks. Three types of styrene-based triblock copolymers and various paraffinic oils were selected to produce physical gels with low modulus. These polymer gels can be shaped by injection moulding to reduce the total cost for mass production. The miscibility and the morphology of the systems were examined by modulated-temperature differential scanning calorimetry (M-TDSC), dynamic mechanical thermal analysis (DMTA), transmission electron microscopy (IEM) and small angle X-ray scattering (SAXS). The experimental results showed that the glass transition temperatures of the mid blocks of the block copolymers swollen with the high Mw paraffinic oils obeyed the Fox equation. This means that the added paraffinic oil is selectively miscible with the mid blocks. However, it was also found by TEM that the polystyrene domains were also swollen by the low Mw paraffinic oil. [Continues.]
- Aeronautical, Automotive, Chemical and Materials Engineering
Publisher© Takahiro Matsuse
Publisher statementThis 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/
NotesA Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.