Sustainable Phenolic Fractions as Basis for Furfuryl Alcohol-Based Co-Polymers and Their Use as Wood Adhesives

Polymers

卷:8

Johannes Gavino¹  Alexander Petutschnigg¹  Paul Luckeneder²  Robert Kuchernig²  Gianluca Tondi² 

[1] Timber Construction, Salzburg University of Applied Sciences, 5431 Kuchl, Austria;

[2] Department Forest Product Technology &

关键词: tannin;    lignin;    adhesive;    furanic;    poly-furfuryl alcohol;    copolymer;    multivariate data analysis;    wood bonding;    panels;   

DOI  :  10.3390/polym8110396

来源: DOAJ

【 摘 要 】

Furfuryl alcohol is a very interesting green molecule used in the production of biopolymers. In the present paper, the copolymerization in acid environment with natural, easily-available, phenolic derivatives is investigated. The processes of polymerization of the furfuryl alcohol with: (i) spent-liquor from the pulping industry and (ii) commercial tannin from acacia mimosa were investigated though viscometry and IR-spectroscopy. The curing kinetics of the formulations highlighted the importance of the amount of furfuryl alcohol and catalyst as well as the effect of temperature for both phenolic-furanic polymers. Evidence of covalent copolymerization has been observed through infrared spectrometry (FT-IR) combined with principal component analysis (PCA) and confirmed with additional solubility tests. These bio-based formulations were applied as adhesives for solid wood and particleboards with interesting results: at 180 °C, the spent-liquor furanic formulations allow wood bonding slightly with lower performance than PVA in dry conditions, while mixed formulations allow the gluing of particleboard with only satisfactory internal bonding tests.

【 授权许可】

Unknown