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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 44: Poster: Biomaterials and Biopolymers

CPP 44.6: Poster

Wednesday, March 9, 2016, 18:15–21:00, Poster B2

Raman spectroscopic investigation of tannin-furanic rigid foams — Andreas Reyer¹, Gianluca Tondi², Raphael Berger¹, Alexander Petutschnigg², and •Maurizio Musso¹ — ¹Fachbereich Chemie und Physik der Materialien, Universität Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Österreich — ²Fachhochschule Salzburg Campus Kuchl, Markt 136a, 5431 Kuchl, Österreich

Tannin-furanic rigid foams are innovative polymeric materials made of inexpensive organic ingredients, and are usually produced via an acid catalyzed polycondensation reaction between furfuryl alcohol and condensed flavonoids (e.g. Mimosa tannin). These bio-friendly foams have already been proposed e.g. as insulating material for eco-sustainable buildings (green building technology), their most important physical properties being their low thermal conductivity and their high fire resistance. The target of the present study is the Raman spectroscopic characterization of the tannin-furanic rigid foams in order to compare their spectral signature with that of the precursor materials furfuryl alcohol, polymerized furfuryl alcohol, and Mimosa tannin, by means of multi-wavelength Raman spectroscopy (at 1064 nm, 532 nm, and 455 nm laser excitation), thereby including a comparison with infrared spectra reported in recent literature, and a discussion on similarities and differences to the spectral signatures of polymer-like sp2 carbon-based materials, and on the the still preserved organic nature of the tannin-furanic foam.