Abstract: Composite sponges with different proportions of oxidized cellulose were prepared by freeze-drying using chitosan and oxidized cellulose as raw materials.The properties of the composites were studied by tests of water absorption,water vapor transmission rate and degradability.The results shown that the mechanical properties of the sponge were greatly improved compared with the pure chitosan sponge,and also had good water absorption,degradability and bacteriostasis.Under the condition that the amount of oxidized cellulose was 5% (wt,mass fraction),the obtained composite sponge had the best performance,the water absorption rate was as high as 1243%,the porosity was 86.51%,and the water vapor transmission rate was 4.13kg/(24h m2),the tensile strength was 0.28MPa,the degradation rate of degradation for 28d was 22.8%,and the inhibition zone width for Escherichia coli and Staphylococcus aureus were 2.50mm and 1.50mm,respectively,which was a potential hemostatic material.
刘文迎, 郭亮亮, 刘泽员, 张静. 氧化纤维素/壳聚糖复合海绵的制备及性能研究[J]. 化工新型材料, 2019, 47(11): 162-166.
Liu Wenying, Guo Liangliang, Liu Zeyuan, Zhang Jing. Research on preparation and property of oxidized cellulose/chitosan composite sponge. New Chemical Materials, 2019, 47(11): 162-166.
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