Projects

Interreg ITAT- InCIMa

InCIMa consortium

InCIMa: Characterization of intelligent materials (2017-2019)

Tannin and lignin foams are natural materials which present very intereresting properties such as high fire resistance, low thermal conductivities and good metal scavenging activity. These products result very attractive for insulation and pollutant absorption purposes. A deep spectroscopic characterization of these materials is carried out in the laboratories of the Salzburg University and at Electra Syncrotrone in Triest.

Prof. M. Musso, Dr. L. Vaccari.

Science Slam (2018)

GrEEEn: Environment, ecology, energy.

Science Slam (2017)

Summary presentation of the main findings of our department.

ATR FTIR Mapping of Leather-fibre panels

Leather-fibre panels: ATR-IR mapping

Chemical characterization of leather-fibre panels (2013-2015)

Wood fibres combined with industrial leather shaving waste produce are interesting composite materials which are characterized by its outstanding fire resistance. The optimization of the components has allowed to prepare a panel with good mechanical and combustion resistance properties. The GC-MS investigation of the chemistry of this engineered material has allowed to understand the mechanism occurring during burning.

Dr. T. Schnabel, T. Grunewald.

Bark insulation board

Tannin-glued bark panel

Glueing parameter optimization of bark panels (2013-2014)

Bark is that material which is used by plant to protect itself against all degradation agents (e.g. sunlight, rain, wind, fungi, bacteria, animals) therefore this material has developed highly interesting protective properties. In particular it was observed that bark has a low thermal conductivity and so it can be used for the production of natural insulating boards.

G. Kain, Prof. M.Barbu.

Leaching of tannin-treated wood

Leaching of Tannin-treated wood

Biocopol 1. Synthesis of new waterproofing tannin-based polymers (2014-2017)

Condensed tannins are well known to react with formaldehyde to produce resins which are used as adhesives. In this project, new cross-linking agents are tested and the polymers obtained are then leached to evaluate their water resistance.

Biocopol group: Dr. M.Nöel, Dr. E.Fredon, Dr. M.F. Thevenon

Old wood impregnation machine

Industrial wood impregnation device

Biocopol 2. Recovery of a industrial autoclave for wood impregnation (2014-2017)

Finding a small-scale industrial plant for wood impregnation is difficult. A 2 m³ device from 1977 has to be recovered and restyled to run medium scale impregnations. This equipment represents the conjuction ring between lab-scale and industrial scale impregnations and it will be available for testing the most promising formulations before being launched in market.

Biocopol industrial partners: J. Stranger from Pongauer Jägerzaun, R. Waschak

Ciencia sem fronteira

Science without border

Ciencia sem fronteiras (2015-2017)

Technology and research exchange with Brasil. Collaboration with the Wood engineering department of the University of Santa Maria. 3 PhD students in different field of wood technology.

Prof. D.A. Gatto, P.Bilhalva, A.L. Missio

Tannin extract ATR FT-IR in the sample compartment

ATR FT-IR of tannin polymers

FT-IR spectroscopy of tannins and tannin polymers (2013-2017)

FT-IR is still one of the most interesting tools for identifying the chemical structure of organic compounds. The study on tannin extracts and their derivated polymers allows to comprehend the crosslinking mechanism occurring during hardening.

Formaldehyde-free Tannin foams  (2011-2013)

Preparation of completely natural tannin-based rigid foams with external energy support (hot press and microwave). Complete replacement of formaldehyde and diethylether for the production of a porous materials obtained from wood extractives, chemical derivates from hydrolysis of the hemicellulose and fermentation of simple sugars.

Project developed in collaboration with Kaindl and Fischer.

M.Link, C.Kolbitsch.

Temperature catalyzed tannin foam

Tannin foam produced by hot press

Optimization of tannin based resin for particleboards (2013-2014)

Study of the process parameters for the optimization of the synthesis of natural, water resistent and high performing particleboards.

Project developed in cooperation with HTL (Holztechnikum Kuchl).

A.Schaffer, G. Ramsauer

Tannin-based adhesives (2011-2013)

Preparation of formulations based natural tannin activated with different crosslinkers for the production of water-resistant adhesives. Production of plywood and wood-based boards at different densities.

Project developed in collaboration with Rema.

Prof. M. Barbu, G. Kain, V. Güttler.

Larch Bark board

Fully natural bark house

Tannin panel

Tannin glued particleboard

Ground test mod

Tannin treated beech for ground resistance test

Tannin-based wood preservatives (p.1) (2007-2009) 

Tannin-based formulations for wood impregnation. Boron mixed with different wood tannin extracts was tested. EN113. Leaching Resistance. Resistance against fungal attacks from Pycnoporus sanguineus. Project carried out during the PhD in collaboration with CIRAD.

Prof. A. Pizzi, Dr. M.F. Thevenon

Tannin-Boron Wood Preservatives (p.2) (2010-2013)
Properties improvement of impregnated wood. Multiple biological test against termites, white and brown rot as well as Hylotropes bajulus larvae. Impact of tannin-boron formulations in softwood and plywood boards. Highly virulent biological tests. Fire and mechanical properties. Weathering tests monitored via dimensional stability and color CIELAB system investigation during artificial and natural exposure. Outlook on leaching behaviour with ICP-EOS. Synthesis of advanced formulations.Post-doc project in collaboration with CIRAD and ENSTIB.

Dr. M.F. Thevenon, Dr. S. Wieland, Dr. T. Schnabel

Further on-going collaborations with CNR-IVALSA: Dr. S. Palanti

Impregnated beech with tannin formulations

Resistance agaist fungal attack

Tannin protection for wood

Freshly impregnated samples

Tannin furanic rigid foam

Tannin based foam

Tannin Based rigid Foams (2006-2009)

Development and optimization of foam formulation. Chemical and physical characterisation of the foam structure. Evaluation of the property changes determined by the presence of specific additives. Targeted modifications for the synthesis of materials with improved compression resistance and water absorption.

Project developed during the PhD in collaboration with various institutes including: Silva Chimica (S.Michele Mondoví), CNRS-Promes (Perpignan) and the University of Liegi.

Prof. A.Pizzi, Dr. G.Benevento, Dr. R.Olives, Prof. H.Pasch

Tannin Based Carbon Foams (2007-2009)New organic precursors for carbon foams. Characterisation of the carbonization process through GC-MS and MALDI-ToF analysis. Determination of physical properties of the carbonaceous material. Image analysis. Chemical activation.

Project carried out during the PhD in collaboration with various institutions. CNRS-IJL, University of Liege and CNRS- ENSC Mulhouse.
Prof. A. Celzard, Prof. S.Blacher, Dr. L.Parmentier, Dr. L. Delmotte

Carbon foam: SEM image

SEM image of tannin-based carbon foams

Carbon foam from organic resource

Carbon foam obtained by carbonization of tannin based rigid foams

Valorization of Wastewater in Pulp & paper Industry (2012-2013)

Concentration of solid content, characterization of the bleaching wastewater, evaluation of the ulktrafiltration system. Chemical activation of the organic residues for the preparation of wood adhesives and for wood protection.

Project carried out in collaboration with Sappi, Schwaighofer, Karasec.

Prof. M. Barbu, Dr. A. Mahler, Dr. F. Struber, Dr. T. Füchsel.

Black liquor concentration

Biobased extract from pulp & paper

Pulp & paper water

Concentration of pulp & paper wastewater

Melamined paper based Natural Products (2006)

Replacement of melamine with polymers of condensed tannins for the nobilitation of particleboards.

Modification of regenerate cellulose (2007)Blending of cellulose xanthate with natural-based additives for the properties enhancement of rayon and cellophane.

Particleboard squares

Natural starch-sugar glued panels

Natural adhesives based on Carbohydrates (2011)

Formulation of adhesives based on starch-sucrose blends. Preparation of adhesives for bonding plywood and particleboards.

Project in collaboration with Pavatex and Rema.

Prof. A. Kandelbauer, Dr. A. Öttl

Straw panel

Straw-based insulation panel

Straw panels (2011)

Formulation of natural resins for the bonding of straw panels for thermal insulation. Project in collaboration with the University of Applied Sciences of Upper Austria.

Dr. S. Hinterreiter, Dr. T. Schnabel

Polymer of Vinyl acetate

Modified polyvinylacetate

Modified PVAc for outdoor applications (2005)

Determination of the role of AlCl3  in the PVAc-NMA hardening mechanism. NMR and IR monitoring of the process. Evaluation of the importance of the acidity degree. New comonomers such as AMA and DEGDA into the vinylic glue.

Project  in collaboration with Cray Valley. Boretto (BO). Italy

Prof. A. Salvini, Dr. L.M. Saija.

Emulsion of acrylic formulations with ultraturrax

Ultraturrax resin blending

Nanoparticles based wood coating (2006)

Acrylic coatings with ZnO nanoparticles were prepared. Dimensional selection of the particles through Nanosight observations. ZnO nanoparticles encaging. Mixing experiment with ultrasounds and mechanical ultrastirring.

Internship project developed at the University of Applied Sciences of Bern.

Dr. M. Properzi, Dr. F. Pichelin.