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Preparation and Recognition Properties of Vanillin‐Imprinted Polymers
Author(s) -
Wang GuoSong,
Cao QiuE,
Xiong Jie,
Zhu XiuFang,
Hou NengBang,
Ding ZhongTao
Publication year - 2006
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200690273
Subject(s) - chemistry , molecularly imprinted polymer , vanillin , ethylene glycol dimethacrylate , methacrylic acid , adsorption , solid phase extraction , polymer , sorbent , chromatography , solvent , selectivity , selective adsorption , extraction (chemistry) , high performance liquid chromatography , monomer , nuclear chemistry , organic chemistry , catalysis
Some new molecularly imprinted polymers (MIPs) were prepared by different protocols involving vanillin as the imprinted molecule, methacrylic acid (= 2‐methylprop‐2‐enoic acid; MAA) as the functional monomer, and ethylene glycol dimethacrylate (EGDMA = 2‐methylprop‐2‐enoic acid ethane‐1,2‐diyl ester) as the cross‐linking agent. The adsorption property of the imprinted polymers was studied by UV spectrophotometry and HPLC. The results indicated that the porogen solvent had a certain influence on the adsorption performance of the polymer. The vanillin‐imprinted polymer MIP 1 prepared with MeOH as porogen, exhibited advantageous characteristics, i.e. , a high binding activity, a good selectivity, and a rapid adsorption equilibrium. The binding parameters studied by Scatchard analysis established that there are two types of binding sites in MIP 1 . Finally, by packing an SPE column (SPE = solid‐phase extraction) with the polymer MIP 1 , the vanillin was separated and enriched successfully by this sorbent from the samples of Vanilla fragrans and beer.