研究了经过热处理的变性淀粉分别与醋酸乙烯酯和丙烯酸的接枝共聚反应 ,并用红外光谱验证了该反应。应用性能的实验结果表明 :变性淀粉与醋酸乙烯酯的接枝共聚反应最佳反应条件是 :单体浓度为 0 .63 mol/L ,引发剂浓度为 2 .6mmol/L,反应温度 70℃ ,淀粉浓度 70 g/L ;变性淀粉与丙烯酸接枝共聚反应的最佳反应条件是 :单体浓度 0 .42 mol/L ,引发剂浓度 3 .0 mmol/L,反应温度 70℃ ,淀粉浓度 70 g/L。将该接枝共聚物作为胶粘剂用于纸浆的粘合 ,与纯变性淀粉粘合剂比较 ,所压制纸板的性能得到较大的改善 The heat-treated modified starch was graft copolymerized with vinyl acetate and acrylic acid, and the reaction was confirmed by infrared spectroscopy. The experimental results show that the optimal reaction conditions for the graft copolymerization of modified starch and vinyl acetate are as follows: monomer concentration of 0.63 mol / L, initiator concentration of 2.6mmol / L, reaction temperature of 70 ℃, Starch concentration 70 g / L; the best reaction conditions of graft copolymerization of modified starch and acrylic acid were as follows: the monomer concentration was 0.42 mol / L, the initiator concentration was 3.0 mmol / L, the reaction temperature was 70 ℃, the starch concentration was 70 g / L. The use of the graft copolymer as an adhesive for the bonding of pulp resulted in a significant improvement in the properties of the pressed board as compared with pure modified starch binders