Disruption of soy-based adhesive treated by Ca(OH)2 and NaOH

摘要

In this paper, the mixed alkalis, namely Ca(OH)2 and NaOH, were used to disrupt soy protein. The structure characteristics and thermal properties of soy protein treated by Ca(OH)2 and NaOH were studied by FT-IR and Differential scanning calorimetry (DSC). The results showed that soy-based adhesive by the mixed alkalis had better dry shear strength, wet shear strength, water resistance, and heat resistance than those of soy adhesive treated by NaOH alone. That was partly proved by results of FT-IR. DSC results indicated that the optimal weight ratio of mixed alkalis Ca(OH)2/NaOH was 2:1.