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Aqueous hydrochloric acid HCl solutions of various concentrations and water were used to leach the adhesive from the wood residues, and the effectiveness of these leaching agents was determined using a combined scanning electron microscopy-energy dispersive spectroscopy SEM-EDS technique in addition to the Kjeldahl method.

Our results showed that factors, such as solid content, density, viscosity, and gel time, were necessary for generating an effective adhesive; herein, we determined that a solid content between Whereas the physical properties of the resulting PB i. The use of hydrolyzing agents successfully decomposed the UF resin adhesives by altering their nitrogen N content; confirmation of this was obtained through SEM-EDS analysis along with the Kjeldahl method. These results indicate that wood residues can be used as raw materials for recycling PBs.

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