Journal
POLYMERS
Volume 9, Issue 2, Pages -Publisher
MDPI AG
DOI: 10.3390/polym9020037
Keywords
flavonoid tannin amines reactions; oligomers distribution; resins; MALDI-ToF; CP-MAS C-13 NMR
Categories
Funding
- conventions of the French state (FUI) through Bpifrance financement [1410042V, 1410043V]
Ask authors/readers for more resources
Reaction of a condensed flavonoid tannin, namely mimosa tannin extract with a hexamethylene diamine, has been investigated. For that purpose, catechin was also used as a flavonoid model compound and treated in similar conditions. Solid-state cross-polarisation/ magic-angle spinning (CP-MAS) carbon 13 nuclear magnetic resonance (C-13 NMR) and matrix assisted laser desorption ionisation time of flight (MALDI-ToF) mass spectroscopy studies revealed that polycondensation compounds leading to resins were obtained by the reaction of the amines with the phenolic hydroxy groups of the tannin. Simultaneously, a second reaction leading to the formation of ionic bonds between the two groups occurred. These new reactions have been shown to clearly lead to the reaction of several phenolic hydroxyl groups, and flavonoid unit oligomerisation, to form hardened resins.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available