Stable free radical polymerization kinetics of alkyl acrylate monomers using in situ FTIR spectroscopy: Influence of hydroxyl-containing monomers and additives

Jeremy R. Lizotte, Timothy Edward Long

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The homopolymerization and copolymerization of various alkyl acrylate monomers was studied under stable free radical polymerization (SFRP) conditions using in situ FTIR spectroscopy to monitor polymerization kinetics. The IR absorbance corresponding to the C-H deformation of the monomer (968 cm -1) was measured to determine monomer conversion in real-time fashion. The monomer disappearance profiles were subsequently converted to pseudo-first order kinetic plots. Altering the alkyl ester chain length and configuration did not reveal a significant trend in the resulting polymerization kinetics. However, addition of 2-hydroxyethyl acrylate (HEA) to a polymerization of n-butyl acrylate (nBA) substantially accelerated the rate of total monomer conversion, increasing the observed rate constant almost two times. 1H NMR spectroscopy also showed that the resulting HEA/nBAcopolymers were enriched with the HEA monomer. Moreover, a similar but enhanced effect was also observed upon the addition of small amounts of dodecanol to an n-butyl acrylate homopolymerization resulting in more than a doubling of the observed rate constant.

Original languageEnglish
Pages (from-to)692-698
Number of pages7
JournalMacromolecular Chemistry and Physics
Volume205
Issue number5
DOIs
Publication statusPublished - 2004 Mar 25
Externally publishedYes

Fingerprint

acrylates
Free radical polymerization
Hydroxyl Radical
free radicals
polymerization
monomers
Monomers
Spectroscopy
Kinetics
kinetics
spectroscopy
Polymerization
Homopolymerization
Rate constants
Dodecanol
copolymerization
Chain length
Copolymerization
Nuclear magnetic resonance spectroscopy
acrylic acid

Keywords

  • Hydrogen bonding
  • Infrared
  • Kinetics (polym.)
  • Radical polymerization
  • Spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

Stable free radical polymerization kinetics of alkyl acrylate monomers using in situ FTIR spectroscopy : Influence of hydroxyl-containing monomers and additives. / Lizotte, Jeremy R.; Long, Timothy Edward.

In: Macromolecular Chemistry and Physics, Vol. 205, No. 5, 25.03.2004, p. 692-698.

Research output: Contribution to journalArticle

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