Polymorphism and polymerisation of acrylic and methacrylic acid at high pressure

Oswald, Iain and Urquhart, Andrew (2011) Polymorphism and polymerisation of acrylic and methacrylic acid at high pressure. CrystEngComm, 13 (14). pp. 4503-4507. ISSN 1466-8033

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    Abstract

    The polymorphism and polymerisation of two related acids have been investigated under high pressure conditions. Acrylic acid crystallises as a new polymorph at 0.65 GPa whilst methacrylic acid crystallises in a new polymorph at a higher pressure of 1.5 GPa. Both these new polymorphs exhibit similar hydrogen bonding motifs to the low temperature phases, however, the molecular packing differs significantly.