Eugenol-based benzoxazine: from straight synthesis to taming of the network properties

Mixed benzoxazine precursors were synthesized using a blend of eugenol, a natural renewable product, and phenol. The structures of these mixed benzoxazine precursors with different phenol : eugenol compositions were attested by super(1)H NMR. Their polymerization and degradation were investigated an...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2015-01, Vol.3 (11), p.6012-6018
Main Authors: Dumas, Ludovic, Bonnaud, Leila, Olivier, Marjorie, Poorteman, Marc, Dubois, Philippe
Format: Article
Language:English
Subjects:
Benzoxazines
Blends
Crosslinking
Density
Monomers
Networks
Phenol
Polymerization
Precursors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mixed benzoxazine precursors were synthesized using a blend of eugenol, a natural renewable product, and phenol. The structures of these mixed benzoxazine precursors with different phenol : eugenol compositions were attested by super(1)H NMR. Their polymerization and degradation were investigated and monitored by DSC and TGA and showed an enhancement of the crosslinking ability with the phenol content. Depending on its relative content, the phenol moiety proved to limit the thermal degradation of the bis-benzoxazine "hybrid" monomer and allowed the formation of crosslinked networks with high thermomechanical stabilities. The properties of the networks were closely dependent on the phenol : eugenol ratio, which allowed for adjustment of the crosslinking density and fine tuning of the glass transition temperature (T sub(g)) within a wide temperature range. A comparison between the polymerized hybrid precursors and blend of two pure monomers displaying the same overall composition showed the same material properties increasing the tunability of the system. The eugenol/phenol combination for the preparation of mixed/hybrid benzoxazines or corresponding blends clearly paves the way to new sustainable high performance bio-based materials.
ISSN:2050-7488
2050-7496
DOI:10.1039/c4ta06636g