Preparation method and application of chitosan biquaternary ammonium salt containing carbon-carbon double bonds

The invention discloses a preparation method and application of chitosan biquaternary ammonium salt containing carbon-carbon double bonds. The structural formula of the chitosan biquaternary ammonium salt containing the carbon-carbon double bonds is as shown in a formula (I) # imgabs0 #. The method has the advantages of simple synthesis steps, low cost and easily available required equipment and raw materials, can effectively improve the swelling rate of the water-absorbent resin, and can be widely applied to the fields of biology, medicine, materials and chemical industry. 本发明公开了一种含有碳碳双键的壳聚糖双季铵盐的制备方法和应用。含有碳碳双键的壳聚糖双季铵盐结构式如式（I）所示#imgabs0#。本发明合成步骤简单、成本较低、所需设备及原料易得，能有效提高吸水树脂的溶胀率，可以广泛应用于生物、医药、材料和化工领域。