Open Access

ARTICLE

MALDI-ToF Analysis of Tannin-Resorcinol Resins by Alternative Aldehydes: Glyoxal and Glutaraldehyde

by

1 LERMAB-ENSTIB, University of Lorraine, 27 rue Philippe Seguin, BP 1041, 88051 Epinal, France
2 King Abdulaziz University, Jeddah, Saudi Arabia

* Corresponding Author:

Journal of Renewable Materials 2014, 2(3), 186-200. https://doi.org/10.7569/JRM.2013.634138

Received 12 December 2013; Accepted 24 March 2014;

Abstract

Glyoxal and glutaraldehyde are two viable alternatives to formaldehyde for the preparation of tanninresorcinol-aldehyde adhesive but lead to less resistant glue joint. Tannin-resorcinol-glyoxal (TRG1) and tannin-resorcinol-glutaraldehyde (TRG2) resins have been prepared and analyzed by matrix-assisted laser desorption/ionization time of fl ight (MALDI-ToF) spectrometry to understand the chemical process behind the pre-curing of these resins and possibly the causes of this lower resistance. The analysis showed that TRG resins are not a simple mix of resorcinol-aldehydes oligomers and fl avonoids, but a much more complex combination of various species including tannin-aldehydes and tannin-resorcinol oligomers.

---

Keywords

---