原位制备季铵盐聚合物/纳米ZnO复合抗菌剂

Synthesis Polymer Quaternary Ammonium Salt/Nano-ZnO Composite Antibacterial Agent via In-situ Method

以二甲基二烯丙基氯化铵(DMDAAC)、甲基丙烯酸(MAA)、烯丙基缩水甘油醚(AGE)、纳米ZnO为原料,通过原位法制备了聚二甲基二烯丙基氯化铵-甲基丙烯酸-烯丙基缩水甘油醚/纳米ZnO(PDMDAAC-AGE-MAA/纳米ZnO)复合材料,考察了纳米ZnO用量对复合材料性能的影响,通过FT-IR、XRD和TEM对其结构进行了表征,将其应用于棉织物整理中。结果表明:当纳米ZnO为0.8%时,PDMDAAC-AGE-MAA/纳米ZnO复合材料的稳定性最佳;复合材料中存在环氧基团以及纳米氧化锌的特征吸收峰,纳米ZnO在复合材料中具有良好的分散性;将其整理织物后,与原布相比,经10次标准洗涤织物对金黄色葡萄球菌和大肠杆菌的抗菌率高达80%以上,对白色念珠菌的抗菌性可达75%以上,具有良好的耐洗牢度;经过整理后的织物断裂强力无影响。

The PDMDAAC-AGE-MAA/nano-ZnO composite was prepared by dimethyl diallyl ammonium chloride （DMDAAC）,allyl glycidyl ether （AGE）,methylacrylic acid （MAA） and nano-ZnO via in-situ polymerization.The effect of the dosage of nano-ZnO on the performance of PDMDAAC-AGE-MAA/nano-ZnO composite was investigated,and the composite was characterized by FT-IR,XRD and TEM.Then cotton fabric was treated with PDMDAAC-AGE-MAA/nano-ZnO composite.The results show that when the dosage of nano-ZnO is 0.8％,the stability of PDMDAAC-AGE-MAA/nano ZnO composite is the best; The characteristic absorption peaks of the epoxy groups and nanoZnO exist in the PDMDAAC-AGE-MAA/nano-ZnO composite,Nano-ZnO is good dispersion in composite; Compared with the control cotton sample,the cotton treated with the PDMDAAC-AGE-MAA/nano-ZnO composite after 10 times of standard washing shows the precent reduction of antibacterial properties against Escherichia coli（E.coli） and Staphylococcus aureus（S.aureus） is above 80％,and the percent reduction of antibacterial properties against Candida albicans （C.albicans） is above 75 ％,because of the antibacterial properties of the synergistic effect by nano-ZnO and N＋ in the composite.The PDMDAAC-AGE-MAA/nano-ZnO composite is coated on the surface of treated cotton fibers.After standard washing,the elements of Zn and N still remain in the treated cotton samples,the cotton treats with PDMDAAC-AGE-MAA/nano-ZnO composite possesses good washing fastness.Compared with the untreated cotton,the cotton treated with PDMDAAC-AGE-MAA/nano-ZnO composite has no effect on the breaking strength.