@article {1549, title = { Biobased foams from condensed tannin extracts from Norway spruce (Picea abies) bark }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {73}, year = {2015}, pages = {144-153}, abstract = {

Different kinds of tannin-based foams were developed in the recent past with fisetinidin/robetinidin-type tannins extracted from mimosa (Acacia mearnsii) or quebracho (Schinopsis lorentzi) bark; or procyanidin-type tannins from pine (Pious pinaster and Pinus radiata). These biobased porous products revealed excellent properties similar to their synthetic counterparts in many applications. Norway spruce (Picea abies) bark is another large potential source of procyanidin-type tannins. In this study rigid and homogeneous foams were produced from purified tannins containing at least 80\% of polyflavonoid condensed tannins. This paper deals with the study of spruce tannins reactivity for rigid foam formulations. Characterization results have point out their very good mechanical resistance (sigma \> 0.08 MPa), and low thermal conductivities (lambda \< 0.045 W/m/K) at low densities (d \< 50kg/m3).

}, url = {https://hal.archives-ouvertes.fr/hal-01294580}, author = {C. LACOSTE and M. COP and K. KEMPPAINEN and S. GIOVANDO and A. PIZZI and M.P. LABORIE and M. SERNEK and A. CELZARD} } @article {1560, title = { Characterization of the curing process of mixed pine and spruce tannin-based foams by different methods }, journal = { EUROPEAN POLYMER JOURNAL }, volume = {69}, year = {2015}, pages = {29-37}, abstract = {

Dielectric analysis, rheometry and differential scanning calorimetry were used in this study to analyse the curing process of tannin-based foams using mixture of maritime pine and Norway spruce tannins. The amounts of blowing agent (pentane) and catalyst (para-toluene sulphonic acid) were varied with the aim of monitoring the changes in the curing processes of foams.

A thermal analysis carried out by differential scanning calorimetry revealed an almost finished reaction at the time of the peak temperature, occurring from the reaction of foaming, whereas conversion results derived from dielectric analysis and rheological tests indicated that curing process began after the occurrence of maximum temperature. With increased catalyst concentration, the start of curing process was accelerated, while a raised amount of pentane delayed the curing process. The curing process of the tannin-based foams was divided into three characteristic phases: the induction phase, the expansion phase, and the structure-strengthening phase.

}, url = {https://hal.univ-lorraine.fr/hal-01598441}, author = {M. COP and B. GOSPODARIC and K. KEMPPAINEN and S. GIOVANDO and M.P. LABORIE and A. PIZZI and M. SERNEK} } @article {1542, title = {The effect of the composition of spruce and pine tannin-based foams on their physical, morphological and compression properties}, journal = {INDUSTRIAL CROPS AND PRODUCTS}, volume = {74}, year = {2015}, pages = {158-164}, abstract = {

Tannin-based foams were successfully prepared, using Norway spruce and maritime pine tannins. Various parameters, including the amount of procyanidins, were varied in order to observe the effect of changes in the density of the foam, on the structure its pores, and on the homogeneity, compressive strength, and compressive modulus of the foams. It was found that an optimum amount of spruce tannin exists, which results in a foam with the lowest density whereas the amount of cross-linker affects homogeneity, and the foam morphology is defined by the surfactant A partial replacement of pine tannin with spruce tannin decreased the foaming temperature and led to decreased compressive strength and a decreased compressive modulus of the foams. The main attribute affecting the reaction was the amount of polyphenols, or the amount of impurities (cellulosic sugars) present in the tannin extract.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-01599795}, author = {M. COP and C. LACOSTE and M. CONRADI and M.P. LABORIE and A. PIZZI and M. SERNEK} } @article {1175, title = {Curing characterisation of spruce tannin-based foams using the advances isoconversional method}, journal = {BioRessources}, volume = {9}, year = {2014}, month = {2014}, chapter = {4643}, author = {M. COP and M.P. LABORIE and A. PIZZI and M. SERNEK} } @article {716, title = {Limitation of XPS for analysis of wood species containing high amounts of lipophilic extractives}, journal = { Wood Science and Technology}, volume = {45}, year = {2011}, month = {2011}, chapter = {369-382}, author = {NGUILA-INARI, G. and PETRISSANS, M. and DUMARCAY, S. and LAMBERT, J. and EHRHARDT, J.J. and GERARDIN, P. and M. SERNEK} }