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壳聚糖(CTS)和水杨醛、环氧氯丙烷交联制备壳聚糖衍生物(RS-CTS-E),并制备相应衍生物的凝胶膜,将凝胶膜浸没在一定浓度碘乙醇溶液中,制备改性壳聚糖加碘膜(RS-CTS-E-I2),并对其进行了IR、SEM等表征。碘含量分析表明:改性壳聚糖凝胶膜对单质碘吸附量随碘乙醇溶液浓度增加而增大。碘吸附动力学结果表明其平衡吸附时间为6 h。抑菌性测试结果表明,w(I2)=19.05%时RS-CTS-E-I2膜对金黄色葡萄球菌抑菌环和大肠杆菌抑菌环的抑菌环直径分别为(31±1)mm和(30±1)mm,均为高度敏感。
Chitosan derivative (RS-CTS-E) was prepared by cross-linking of chitosan (CTS) and salicylaldehyde and epichlorohydrin, and the gel film of the corresponding derivative was prepared. The gel film was immersed in a certain concentration of iodine (RS-CTS-E-I2) was prepared and characterized by IR, SEM and so on. The analysis of iodine content showed that the amount of elemental iodine adsorbed by modified chitosan gel film increased with the concentration of iodine-ethanol solution. Iodine adsorption kinetics results show that the equilibrium adsorption time of 6 h. The bacteriostasis test results showed that the diameter of bacteriostatic rings of RS-CTS-E-I2 membrane on the antibacterial rings of S.aureus and E.coli were (31 ± 1) mm at w (I2) = 19.05% And (30 ± 1) mm, are highly sensitive.