Preparation and Spectral Characteristic of Molecularly Imprinted Polymers for Sulfamethazine
LIU Hui-jun1,XU Wei-jian2,LIU Yao-chi1,XIONG Yuan-qin2
1. College of Chemistry and Chemical Engineering,University of South China,Hengyang 421001,China 2. College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China
Abstract：Molecularly imprinted polymers(MIPs) were synthesized,which was initiated by UV photo-induction at low temperature,with sulfamethazine(SM2) was used as template,methacrylic acid(MAA) as monomer,and ethylene glycol dimethylacrylate (EGDMA) as crosslinker. By UV spectrometry the authors compared the combination action on sulfamethazine with MAA and researched the static adsorption ability and selective recognition of the molecularly imprinted polymers. The results showed that the combination action of functional monomer with template molecules was produced,sulfamethazine imprinted polymers using methacrylic acid as monomer had higher affinity capability than NMIP and comparatively similar structure substrate of sulfisoxazole(SIZ),while SM2 imprinted polymers could specifically recognize the corresponding imprinted molecules. The static adsorption modulus of SM2 imprinted polymer was 282.3 mg·mL-1 and the separate factor was 3.9. Then,the prediction imprinting principle of sulfamethazine template polymer was given. The infrared spectra of methacrylic acid (MAA) and ethylene glycol dimethylacrylate (EGDMA) and MIPs of SM2 were analysed. It was found that the absorbability peak of CC function group in the IMPs turned out to be very low,but the function group of carboxylic acid in the IMPs did not markedly change. The results showed that there were some functional groups in MIPs which could interact with the template.
