苏丹红多孔分子印迹复合膜的制备及其性能研究  

Preparation and Characterization of Porous Molecularly Imprinted Composite Membrane with Sudan Ⅰ as the Template

作　　者：蔡良根[1] 徐小艳[2] 庞杰[1] 孙远明[2] 董彬[2] 罗晓敏[2] 

机构地区：[1]福建农林大学食品科学学院,福建福州350002 [2]广东省食品质量安全重点实验室,华南农业大学食品学院,广东广州510642

出　　处：《食品科学》2013年第18期70-74,共5页Food Science

基　　金：广东高校优秀青年创新人才培育项目(209030)

摘　　要：以聚偏氟乙烯（PVDF）微孔滤膜为支撑膜，苏丹红I为模板分子，二甲基甲酰胺（DMF）和聚乙二醇20000（PEG2000）为致孔剂，采用紫外光引发原位聚合制备分子印迹复合膜（MICM）。通过扫描电镜（SEM）和傅里叶变换衰减全反射红外光谱（FITR—ATR）技术分析复合膜的表面形态和结构，并探讨膜结合、选择渗透和稳定性机理。结果表明苏丹红I与MAA之间相互作用的两个氢键构成了特异性孔穴的结合位点，对苏丹红I具有较强的结合能力；MICM表面呈多孔状，对模板分子及其结构类似物具有良好的选择性和渗透性能；MICM可在温度为30-80℃、pH值为1．5～10的条件下可稳定使用。Molecularly imprinted polymer composite membrane （MICM） was prepared with PVDF membrane as the supporting membrane, Sudan I as the template molecule, DMF and PEG20000 as the porogen through in-situ polymerization by UV irradiation. SEM and FITR-ATR spectroscopy were employed to describe surface feature and structure of the membrane. Three parameters such as binding capacity, selective permeation and stability of MICM were further discussed. The results showed that hydrogen bonds of Sudan I and MAA could interact with each other and constitute the bonding sites in caves. The porous surface of MICM also exhibited higher permeation selectivity for the template molecule and its analogues. Furthermore, MICM can work steadily at 30-80 ℃ and pH 1.5-10.

关 键 词：分子印迹复合膜 苏丹红Ⅰ 原位聚合 多孔 性能 

分 类 号：TQ028.3[化学工程]