Changes in Physical and Chemical Properties of Sucrose bythe Addition of Ammonium Dihydrogen Phosphate

To explore the possibility of a novel natural wood adhesive, we clarified that the basic characteristics of sucrose with added ammonium dihydrogen phosphate (ADP). Sucrose and ADP mixed at various weight ratios were heated at 120-200°C for a maximum of 20 min. Thermal analyses, insoluble matter rate against boiling water, and Fourier transform infrared spectroscopy (FT-IR) were measured. The thermal properties of sucrose lowered significantly with the addition of a small amount of ADP. The insoluble matter rate increased with increasing heating temperature, irrespective of mixture ratio. However, the addition of a large quantity of ADP resulted in a low insoluble matter rate. The effective heating time and ADP content at 180°C were 10 min and 10wt%, respectively. The heated mixture contained a furan ring and carbonyl group, according to the results of FT-IR. It was clarified that sucrose changed to a high water-resistant substance by the addition of ADP and heating treatment.