聚乙烯醇改性无纺布抗菌复合膜的制备及其性能研究

Preparation and properties of polyvinyl alcohol modified non woven fabric antibacterial composite membrane

探究聚乙烯醇改性无纺布抗菌复合膜的制备方法及其性能。用溶液共混法将聚乙烯醇母液分别与不同抗菌剂进行共混,制得聚乙烯醇抗菌母液,再用表面涂覆法将抗菌母液涂布到无纺布表面,干燥后成膜,并对抗菌复合膜的各项性能进行检测。结果表明:脱氢乙酸钠-聚乙烯醇/无纺布抗菌复合膜(SD-PVA/NWF)的吸水性能、抗拉强度及光学性能均优于山梨酸钾-聚乙烯醇/无纺布抗菌复合膜(PS-PVA/NWF)和苯甲酸钠-聚乙烯醇/无纺布抗菌复合膜(SB-PVA/NWF);添加剂的种类不同,复合膜的热封温度不同;抗菌剂的加入降低了复合膜的热稳定性;相比于PS-PVA/NWF和SB-PVA/NWF,相同添加量的SD-PVA/NWF抗菌复合膜的抗菌性能最佳。

ObjectiveTo research the method of preparing polyvinyl alcohol modified non woven fabric antibacterial composite membrane and properties of composite membrane.Methods Solution blended process was used in this experiment to mix PVA mother liquid with different antibacterial agent to make antibacterial PVA mother liquid.Then surface coating method was used to coat antibacterial mother liquid onto non woven fabric to make composite films after drying.Test and compare the properties of different composite films.Results SD-PVA/NWF composite film was better than PS-PVA/NWF and SB-PVA/NWF not only in water absorption property,but also in tensile strength and optical performance; The type of the antibacterial agent makes composite films with different sealing temperature;Also,the addition of antibacterial agent decreased the thermostability of composite films;Compared with PS-PVA/NWF and SB-PVA/NWF composite film with the same additive amount,SD-PVA/NWF composite film has the best antibacterial property.