Characterization of Curing and Bonding of Wood with Adhesive Mixtures of Liquefied Wood and Hexamethylenediamine

Various crosslinking agents can be added to the formulations of natural-based adhesives for wood bonding in order achieve better durability and higher strength formed joints. In present study, effect hexamethylenediamine (HMDA) addition on performance liquefied (LW) adhesive is investigated. Differential scanning calorimetry showed improved thermal stability LW with HMDA. The intensified presence amide linkages (C–N bonds) was found LW+HMDA attenuated total reflection Fourier transform infrared spectroscopy. Analysis bonded joints using an automated evaluation system that a press temperature resulted stronger bonds both types adhesives. Moreover, HMDA bond accelerated adhesive. However, tensile shear (6.76 ± 2.16) N × mm−2 (for LW) (6.89 2.10) LW+HMDA), were unsuitable interior non-structural use. addition, acidity relatively high failure (70%) tested. Improved reflected resistance water degradation. conclusion, promising additive improving