Projects per year
Abstract
This article shows that pressure can be a low-intensity route to the synthesis of polymethacrylic acid. The exploration of perdeuterated methacrylic acid at high pressure using neutron diffraction reveals that methacrylic acid exhibits two polymorphic phase transformations at relatively low pressures. The first is observed at 0.39 GPa, where both phases were observed simultaneously and confirm our previous observations. This transition is followed by a second transition at 1.2 GPa to a new polymorph that is characterized for the first time. On increasing pressure, the diffraction pattern of phase III deteriorates significantly. On decompression phase III persists to 0.54 GPa before transformation to the ambient pressure phase. There is significant loss of signal after decompression, signifying that there has been a loss of material through polymerization. The orientation of the molecules in phase III provides insight into the possible polymerization reaction.
Original language | English |
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Pages (from-to) | 12147-12154 |
Number of pages | 8 |
Journal | Journal of Physical Chemistry B |
Volume | 119 |
Issue number | 36 |
Early online date | 19 Aug 2015 |
DOIs | |
Publication status | Published - 10 Sept 2015 |
Keywords
- polymerization
- ambient pressures
- decompression phase
- loss-of-signal
- low-intensity
- methacrylic acids
- polymerization reaction
- polymethacrylic acid
- polymorphic phase transformations
- neutron diffraction
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Dive into the research topics of 'Investigation of methacrylic acid at high pressure using neutron diffraction'. Together they form a unique fingerprint.Profiles
Projects
- 1 Finished
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Pressure-induced synthesis of doped polymers - a greener route to functional polymers
Oswald, I. (Principal Investigator) & Urquhart, A. (Co-investigator)
10/12/12 → 9/12/15
Project: Research
Datasets
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Datasets for Investigation of methacrylic acid at high pressure using neutron diffraction.
Oswald, I. (Creator), University of Strathclyde, 8 Oct 2015
DOI: 10.15129/0f8c68cb-0caa-41f8-8ebe-47d73f85875c
Dataset