香草醛分子印迹膜的制备及识别性能研究  

Preparation and Recognition Properties of Vanillin Molecularly Imprinted Membranes

作　　者：孙智纯 王兵[1] 皇甫风云[1] 单娟娟[1] 

机构地区：[1]天津工业大学省部共建分离膜与膜过程国家重点实验室,天津工业大学环境与化学工程学院,天津300387

出　　处：《高校化学工程学报》2016年第3期661-667,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：天津市自然科学基金(13JCQNJ C02600)

摘　　要：以香草醛(VAN)为模板分子,?-甲基丙烯酸(MAA)为功能单体,乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,二甲基亚砜(DMSO)为溶剂,采用沉淀聚合法合成了香草醛分子印迹聚合物微球(MIPMs)。通过紫外光谱(UV)、傅里叶变换红外光谱仪(FT-IR)研究了模板分子与功能单体之间的相互作用和最佳配比,利用透射电子显微镜考察了聚合物微球的微观形貌;结合膜技术的优点,进一步制备了香草醛分子印迹共混膜,通过扫描电子显微镜(SEM)考察了共混膜的形态特征,并研究了分子印迹共混膜的结合性能及选择性透过能力。结果表明,MAA与VAN之间通过氢键相互作用,分子印迹共混膜对模板分子香草醛表现出高度识别性。Vanillin molecularly imprinted polymer microspheres（MIPMs） were synthesized via precipitation polymerization using methacrylic acid（MAA） as a functional monomer, ethylene glycol dimethacrylate（ EGDMA） as a cross-linker and dimethyl sulfoxide as a solvent. The interaction and the best ratio between vanillin and MAA were studied by UV spectroscopy and fourier transform infrared spectroscopy（FT-IR）, and the microstructure of the microsphere was observed by transmission electron microscopy（TEM）. Furthermore, MIPMs blend membranes were prepared by combining molecular imprinting and membrane technology. The microstructure of the blend membrane was observed by a scanning electron microscope（SEM） and the binding capacity and selective permeability were studied. The results indicate that MIPMs are formed via hydrogen bonding interaction between vanillin and MAA, and the blend membrane exhibits excellent vanillin recognition ability.

关 键 词：香草醛 沉淀聚合 分子印迹共混膜 特异性识别 

分 类 号：TQ65[化学工程—精细化工] O652[理学—分析化学]