Abstract:
Based on the early study of soybean modifying Jatropha curcas proteinbased adhesives, effects of process of NaOHUrea treatment Ca(OH)2/NaOH and NaHSO3 treatment on Jatropha curcas proteinbased adhesives were studied in this paper. The results showed that crosslinking reaction between Jatropha curcasprotein treated by the front three processes and subsequent crosslinker was obvious, and the final protein molecular size had played an important role in bonding strength and water resistance of Jatropha curcasproteinbased adhesives. Ca(OH)2/NaOH treatment for Jatropha curcas protein was useless. NaOHUrea treatment for Jatropha curcas protein, performance of Jatropha curcas proteinbased adhesives barely met the national standards but crosslinker CRO and pMDI. NaHSO3 treatment for Jatropha curcas protein, then adding the same amount of crosslinker such as KF, CRO and pMDI, bonding performance and water resistance of Jatropha curcas proteinbased adhesives improved obviously. After treated by NaHSO3, Jatropha curcas protein could remain protein macromolecular structure as far as possible, and then the water resistance of Jatropha curcas proteinbased adhesives was stronger than other two treatments.