End-grained wood/polyurethane composites, 3 - Isocvanate-free route

Olivier Persenaire, Michaël Alexandre, Philippe Degée, Philippe Dubois

Research output: Contribution to journalArticlepeer-review

Abstract

End-grained wood/polyurethane composites were obtained by a water-based one-pot process free of diisocyanates. Wood was impregnated with both PEG and CBC-functionalized PEG as a coupling agent. A thorough study of the CBC-mediated end-groups conversion of PEG was achieved. It came out that functionalization conditions strongly affected the polyurethane chain extension and its grafting onto the wood structure. Antiswelling efficiency measurements showed that the one-pot procedure allowed to reach comparable dimensional stabilization than the diisocyanate-based process previously described. Morphological analysis demonstrated that such an improvement was attributable to the formation of cell wall-bulked WPCs.

Original languageEnglish
Pages (from-to)581-588
Number of pages8
JournalMacromolecular Materials and Engineering
Volume293
Issue number7
DOIs
Publication statusPublished - 9 Jul 2008
Externally publishedYes

Keywords

  • Dimensional stability
  • End-grained wood
  • Impregnation
  • Morphology
  • Polyurethanes

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