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Matrix-assisted laser desorption/ionization time-of-flight structure determination of complex thermoset networks: Polyflavonoid tannin–furanic rigid foams

✍ Scribed by A. Pizzi; G. Tondi; H. Pasch; A. Celzard

Book ID
101588463
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
213 KB
Volume
110
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Polyflavonoid tannin–formaldehyde–furfuryl alcohol rigid foams yield hardened, rigid, tridimensional networks in which there are covalently linked structures derived from the reaction of their main components. Thus, polyflavonoid tannin structures, tannin–formaldehyde structures, furanic structures derived by the self‐condensation of furfuryl alcohol, and mixed tannin–furane and tannin–furane–formaldehyde structures are all present in the continuous foam networks. Some complex, tridimensional structures involving tannin's flavonoid units, furan nuclei, and formaldehyde‐derived methylene bridges appear to be formed too. Matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry has been used to determine the different segments contributing to forming the complex thermosetting networks of the hardened foams. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

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