Tannin-based adhesive cross-linked by furfuryl alcohol-glyoxal and epoxy resins. (October 2019)

• Record Type: Journal Article
• Authors: Zhang, Jun; Xi, Xuedong; Liang, Jiankun; Pizzi, Antonio; Du, Guanben; Deng, Shuduan
• Is Part Of: International journal of adhesion & adhesives. Volume 94(2019)
• Page Start: 47
• Page End: 52
• Publication Date: 2019-10
• Subjects: Furfuryl alcohol-glyoxal -- Tannin based adhesive -- Cross-linker -- Water resistance; Adhesion -- Periodicals; Adhesives -- Periodicals; Adhésion (Physique) -- Périodiques; Adhésifs -- Périodiques; Adhesie; Kleefstoffen; Adhesion; Adhesives; Periodicals; 668.3
• DOI: 10.1016/j.ijadhadh.2019.04.012
• Languages: English
• ISSNs: 0143-7496

Abstract

Abstract: To prepare a natural tannin-based adhesive with good water resistance, an environment friendly furfuryl alcohol-glyoxal resin (FG) synthesized in the laboratory was developed as a cross-linker for tannin-based adhesives. 13 C Nuclear Magnetic Resonance (NMR) and Matrix-Assisted Laser Desorption-Ionization Time-of-Flight (MALDI-TOF) mass spectroscopy results indicated that furfuryl alcohol and glyoxal reacted under acidic conditions and that the -CH-(OH)- groups could be shown to be the ones involved in the cross-linking of the tannin-furfuryl-glyoxal adhesive (TFG). The results for the wet shear strength of TFG-bonded plywood showed that the cured TFG was improved and better than that bonded with a tannin-furfuryl alcohol (TF) adhesive. Moreover, the TFG adhesive cross-linked with 12% epoxy resin (EPR) presented a good water resistance. It had a modulus of elasticity (MOE) higher than that of tannin-furfuryl alcohol-formaldehyde (TFF), TF and phenol-formaldehyde (PF) adhesives.