Investigation of acrylic acid at high pressure using neutron diffraction

Blair F. Johnston, William G. Marshall, Simon Parsons, Andrew J. Urquhart, Iain D. H. Oswald

Research output: Contribution to journalArticle

8 Citations (Scopus)
106 Downloads (Pure)

Abstract

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 rationalized 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 polymerizing on decompression to ambient pressure. The resulting product is analyzed via Raman and FT-IR spectroscopy and differential scanning calorimetry and found to possess a different molecular structure compared with polymers produced via traditional routes. 

Original languageEnglish
Pages (from-to)4044-4051
Number of pages8
JournalJournal of Physical Chemistry B
Volume118
Issue number14
DOIs
Publication statusPublished - 20 Mar 2014

Keywords

  • acrylic acid
  • neutron diffraction
  • acrylic acid-d4
  • Pixel method

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