Développement de stratifiés de papiers imprégnés à base de résine de tannin de mimosa et d'alcool furfurylique

Abstract : Resin impregnated papers have been widely used in manufacturing laminates for wood panels. Generally, paper impregnation involves melamine formaldehyde, melamine urea formaldehyde and urea formaldehyde resin. However, these materials are expensive when used in high quantity and derived from non renewable resources. Therefore, in this work we prepared tannin furanic resin impregnated paper to replace melamine formaldehyde and urea formaldehyde in the paper impregnation. Tannin furanic resin composed of two main natural materials: a) mimosa tannins which is non-toxic, environmentally friendly and relatively inexpensive to substitute the synthetic resin and b) furfuryl alcohol obtained by catalytic reduction of furfural, a natural compound obtained by the hydrolysis of sugars derived from agricultural waste. Tannins are naturally occurring phenolic compounds extracted from the bark trees that have been used industrially for many years as wood panel adhesives but no distance work have been done to study their potential in paper laminates. In this work, we studied: 1)The gel time between mimosa and pine tannin with furfuryl alcohol without the addition of formaldehyde from pH 1 to pH 11 2)The MALDI-TOF and NMR of mimosa tannin with furfuryl alcohol 3)The surface quality of the plywood overlaid with mimosa tannin- furfuryl alcohol resin 4)10-ply high pressure laminates (HPL) were prepared with mimosa tannin- furfuryl alcohol resin. The surface quality of the HPL and the mechanical properties of plywood overlaid with this HPL were examined. 5)10-ply high pressure laminates were prepared with mimosa tannin- furfuryl alcohol resin in the acid condition. The surface quality of the prepared HPL were compared with PF
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Ummi Hani Binti Abdullah. Développement de stratifiés de papiers imprégnés à base de résine de tannin de mimosa et d'alcool furfurylique. Autre. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0060⟩. ⟨tel-01750768⟩

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