超声波交联壳聚糖-纤维素共混膜的制备及性能研究

摘要

在超声波辐射条件下，采用壳聚糖（ CTS）和二乙胺基乙基纤维素（ DEC）为原料，在甲醛的交联作用下制备共混膜。考察了m（ DEC）：m（ CTS）共混比、甲醛用量、交联时间和超声波辐射功率对膜性能的影响。结果表明，在共混比1：2，甲醛2 mL，交联时间3 min和超声波功率400 W条件下，得到的共混膜拉伸弹性膜量最大在共混比为1：2，甲醛1 mL，超声波交联时间3 min 和超声波功率360 W时，共混膜的断裂伸长率最大。%Under ultrasonic wave radiation condition,chitosan and diethylamino ethyl cellulose are used for the basic raw materials. The blend membrane was made by blending and crosslinking between chitosan molecules and formaldehyde crosslinker. Effect of m( DEC ): m( CTS ) blending ratio,volume of the crosslinker,reaction time and power of the ultrasonic on membrane properties were investigated. The result showed that the blend membrane which was made at the condition of blending ratio 1 :2 ,crosslinking a-gent 2 mL,reaction time 3 min,ultrasonic power 400 W,the combination has the biggest tensile modulus of blending ratio 1 :2,crosslinking agent 1 mL,reaction time 3 min and ultrasonic power 360 W,and the blend membrane has the biggest breaking elongation.