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以壳聚糖(CS)与海藻酸钠(SA)为原料,以0.4%(体积分数,下同)的甘油为增塑剂,以1.25%的戊二醛为交联剂,制得CS/SA复合膜,研究了CS与SA不同配合比和交联时间对复合膜性能的影响。等浓度的CS膜液与SA膜液的体积配合比为9∶1,交联时间为30min时,制得的CS/SA复合膜性能最佳,膜厚度较薄为31.8μm、溶胀度较好为235%、水溶性较弱为12%、水蒸汽透过系数较低为0.72×10~(-10)g/Pa·s·m。
Using chitosan (CS) and sodium alginate (SA) as raw materials, 0.4% (volume fraction) glycerol as plasticizer and 1.25% glutaraldehyde as crosslinking agent to prepare CS / SA composite membrane, CS and SA different blending ratio and crosslinking time on the performance of the composite membrane. The CS / SA composite membrane prepared at the same concentration of CS membrane and SA membrane had a volume ratio of 9:1 and a cross-linking time of 30 min, the membrane thickness was thinner and the swelling degree was better Was 235%, the water-solubility was 12%, and the water vapor transmission coefficient was low at 0.72 × 10 -10 g / Pa · s · m.