Phosphorylated lignin as a halogen-free flame retardant additive for epoxy composites

Gamini P. Mendis, Sydney G. Weiss, Matthew Korey, Charles R. Boardman, Mark Dietenberger, Jeffrey P. Youngblood, John A. Howarter

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Sustainable, non-halogenatedflame retardants are desired for a variety of industry applications. Lignin, an industrially processed wood derivative, has been examined as a potential sustainable flame retardant additive to polymer systems. Here, the lignin is phosphorylated using a pyridine catalyzed esterification reaction with diphenyl phosphoryl chloride to improve its char forming abilities. The flammability performance of modified lignin-epoxy composites was tested using mass loss calorimetry. With the addition of 10% modified lignin, the peak heat release rate decreased by 40% and the total heat of combustion decreased by 20%.

Original languageEnglish (US)
Pages (from-to)150-159
Number of pages10
JournalGreen Materials
Issue number4
StatePublished - Nov 10 2016

All Science Journal Classification (ASJC) codes

  • Pollution
  • Polymers and Plastics
  • Materials Chemistry


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