Functional hyperbranched polymers using ring-opening metathesis polymerization of dicyclopentadiene with monoterpenes

Robert T. Mathers, Krishnan Damodaran, Matthew G. Rendos, Michael S. Lavrich

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

A general method for the synthesis of hyperbranched functional polymers in monoterpenes is described. During the polymerization of dicyclopentadiene, metathesis reactions between the growing polymer chain and monoterpenes produced soluble well-defined polymers. The molecular weight, intrinsic viscosity [], and glass transition temperature (Tg) values resulting from chain transfer to monoterpenes depended on the mode of monomer addition but generally decreased as follows: d-limonene limonene oxide -pinene. Calculation of the Mark Houwink Sakarada values by gel permeation chromatography suggested that, in solution, the branched poly(dicyclopentadiene) had a smaller hydrodynamic volume than polynorbornene. Characterization by NMR spectroscopy indicated the hyperbranched polymer had a complex structure composed of linear, terminal, semidendritic, and dendritic units.

Original languageEnglish (US)
Pages (from-to)1512-1518
Number of pages7
JournalMacromolecules
Volume42
Issue number5
DOIs
StatePublished - Mar 10 2009

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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