Abstract: Polycarboxylic acids acted as esterification agents and inorganic salts acted as catalyst in the research of wood crosslinking reaction. This new and soluble crosslinking system is poison free and pollution free system. In this work crosslinking reaction intermediate was proofed by FTIR spectra, therefor we can infer crosslinking reactions between polycarboxylic acid and wood want through cyclic anhydride intermediates.

Key words: Polycarboxylic acid, Crosslinking reaction, Reaction intermediate, Reaction mechanism