Determination of the propagation rate coefficient for 3- [tris(trimethylsilyloxy)silyl] propyl methacrylate by pulsed-laser polymerization

L. M. Muratore, M. L. Coote, T. P. Davis

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The free radical propagation rate coefficient of 3- [tris(trimethylsilyloxy)silyl] propyl methacrylate was measured by pulsed- laser polymerization over the temperature range 288-323 K. The activation energy and pre-exponential factor were determined, by fitting the propagation data to the Arrhenius equation, as 19.9 kJ/mol and 1.44 x 106 1 mol-1 s- 1, respectively. This value for the activation energy is significantly less than that obtained for the lower alkyl methacrylates and is similar to that previously reported for dodecyl methacrylate. The Mark-Houwink-Kuhn-Sakurada (MHKS) values for poly(3-[tris(trimethylsilyloxy)silyl] propyl methacrylate) in tetrahydrofuran were also determined using size exclusion chromatography with on-line viscometry and refractive index detectors. The molecular weight- intrinsic viscosity distributions were measured for forty-four independent samples yielding MHKS constants of 1.67 x 10-5 dl/g and 0.74 for K and α respectively.

Original languageEnglish
Pages (from-to)1441-1447
Number of pages7
JournalPolymer
Volume41
Issue number4
DOIs
Publication statusPublished - Feb 2000
Externally publishedYes

Bibliographical note

Funding Information:
We acknowledge funding from the Australian Research Council and the granting of Australian Postgraduate Awards to both MLC and LMM.

Keywords

  • 3-[tris(trimethylsilyloxy)silyl] propyl methacrylate
  • Propagation coefficient
  • Pulsed-laser

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