Synthesis of a macromonomer library from high-temperature acrylate polymerization

Anna Marie Zorn, Thomas Junkers, Christopher Barner-Kowollik

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38 Citations (Scopus)

Abstract

The auto-initiated high temperature acrylate polymerization represents a versatile route for the synthesis of macromonomer building blocks. Various macromonomers were synthesized via this route based on methyl, ethyl, n-butyl, t-butyl, 2-ethylhexyl, isobornyl and 2-[[(butylamino) carbonyl]oxy]ethyl acrylate. The synthesis requires a temperature of 140°C and is carried out in a 5 wt.-% solution of hexyl acetate. The macromonomer library is fully characterized via electrospray ionization mass spectrometry (ESI-MS). The amount of macromonomers containing the geminal double bond lies in between 82 and 95%, depending on the monomer type. The achievable molecular weight of the macromonomers is located between 800 and 2 000 g·mol-1 with a polydispersity of close to 1.6. In addition, it is demonstrated that radical initiators are useful add-ons (to circumvent the inhibition time observed during initiator-free synthesis) without interfering in the actual polymerization as no initiator-fragment containing products are identified via high resolution mass spectrometry. (Figure Presented).

Original languageEnglish
Pages (from-to)2028-2035
Number of pages8
JournalMacromolecular Rapid Communications
Volume30
Issue number23
DOIs
Publication statusPublished - 1 Dec 2009
Externally publishedYes

Keywords

  • β-scission
  • Acrylates
  • Macromonomers
  • Mass spectrometry
  • Radical polymerization
  • Self-initiated polymerization

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