1 Department of Micro- and Nanotechnology, Technical University of Denmark2 Colloids and Biological Interfaces, Department of Micro- and Nanotechnology, Technical University of Denmark3 University of Strathclyde4 Rutherford Appleton Laboratory5 University of Edinburgh6 University of Strathclyde7 Rutherford Appleton Laboratory8 University of Edinburgh
This article details the exploration of perdeuterated acrylic acid at high pressure using neutron diffraction. The structural changes that occur in acrylic acid-d4 are followed via diffraction and rationalised using the Pixel method. Acrylic acid undergoes a reconstructive phase transition to a new phase at ~0.8 GPa and remains molecular to 7.2 GPa before polymerising on decompression to ambient pressure. The resulting product is analysed via Raman, FT-IR spectroscopy and Differential Scanning Calorimetry and found to possess a different molecular structure compared with polymers produced via traditional routes.
Journal of Physical Chemistry B, 2014, Vol 118, Issue 14, p. 4044-4051