摘要
将乙胺直接加到聚偏氟乙烯铸膜液中制备含碳碳双键的聚偏氟乙烯膜,在不除氧和无光引发剂条件下,采用紫外光直接辐射将抗菌单体甲基丙烯酸二甲胺乙酯(DMAEMA)接枝到聚偏氟乙烯膜表面,利用氯化苄对接枝DMAEMA的膜进行季铵化改性,制备了具有抗菌性的聚偏氟乙烯分离膜。考察不同接枝率膜的抗菌效果,接枝改性后膜的抗菌效果随接枝率增大而增加,同时随时间的延长而增强。经稀盐酸洗涤后,膜的抗菌效果并无明显变化,表明紫外光接枝改性后的聚偏氟乙烯分离膜具有较稳定的抗菌性。
Poly(vinylidene fluoride) (PVDF) membranes with molecular structure containing carbon-carbon double bonds were prepared by adding ethylamine into casting solution. Antibacterial monomer dimethylamino ethyl methacrylate (DMAEMA) was grafted onto the surface of PVDF membranes via ultraviolet without initiator and deoxygenation, which were then modified by benzyl chloride. The antibacterial properties of the membraneswere studied, and the results show that the membranes with higher graft density have better antibacterial performance, and the performance is enhanced with the increase of graft density and contact time of bacterium with grafted membranes. Meanwhile, there is no significant change after dilute hydrochloric acid washing,which indicates that acid has no effect on the antibacterial properties of the PVDF membrane.
作者
王林
华河林
李娜
熊鹰
WANG Lin;HUA He-lin;LI Na;XIONG Ying(Department of Environment and Chemical Engineering, Nanchang Hangkong University,Nanchang 330063, China;Zhongshan Lonkee Membrane Industry Co., Ltd., Zhongshan 528436, China)
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2017年第1期205-210,共6页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金(20906044)
深圳市战略新兴产业发展专项资金(JCYJ20140417144423188)
南昌航空大学研究生创新专项资金(YC2015011)
关键词
紫外光接枝
抗菌膜
聚偏氟乙烯
甲基丙烯酸二甲胺乙酯
ultraviolet grafting
antibacterial membranes
poly(vinylidene fluoride)
dimethylamino ethyl methacrylate
