Linear and star architecture methacrylate-functionalised PDMS

Ben T Cheesman, Paul J Gates, TC Castle, Terence Cosgrove, Stuart W Prescott

Research output: Contribution to journalArticle (Academic Journal)peer-review

6 Citations (Scopus)
239 Downloads (Pure)

Abstract

Methacrylate-terminated poly(dimethylsiloxane)s in both linear and star architectures have been produced through a time-efficient 1 pot, 2 stage reaction which involved hydrosilylation of small moleculesilanes with allyl methacrylate and subsequent equilibration of the product with octamethylcyclote-trasiloxane (D4) in the presence of an acid catalyst. This synthetic route required only one work-upprocedure and the products were comparable to those produced by 2 step processes typically reportedin literature. All methacrylate-terminated products were approximately double the molar masses antic-ipated based on reagent loadings. This is thought to be due to redistribution of siloxane bonds in thepresence of the platinum hydrosilylation catalyst accompanied by a loss of silicon from the reaction byevaporation of dimethylsilane. It is believed that this is the first report of such siloxane equilibration occurring at room temperature.
Original languageEnglish
Pages (from-to)122-129
Number of pages8
JournalMaterials Today Communications
Volume3
Early online date28 Jan 2015
DOIs
Publication statusPublished - 2015

Bibliographical note

Date of Acceptance: 28/01/2015

Keywords

  • siloxane
  • polymer architecture
  • ring-opening polymerisation

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