Study on Synthesis of Pyrethroids Molecularly Imprinted Polymers by Precipitation Polymerization and Their Adsorption Properties
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Study on Synthesis of Pyrethroids Molecularly Imprinted Polymers by Precipitation Polymerization and Their Adsorption Properties
Vol. 38, Issue 1, Pages: 107-111(2019)
作者机构:
1. 河南工业大学化学化工与环境学院
2. 河南水利与环境职业学院
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Study on Synthesis of Pyrethroids Molecularly Imprinted Polymers by Precipitation Polymerization and Their Adsorption Properties. [J]. 38(1):107-111(2019)
DOI:
Study on Synthesis of Pyrethroids Molecularly Imprinted Polymers by Precipitation Polymerization and Their Adsorption Properties. [J]. 38(1):107-111(2019)DOI:
Study on Synthesis of Pyrethroids Molecularly Imprinted Polymers by Precipitation Polymerization and Their Adsorption Properties
Pyrethroids molecular imprinted polymer were synthesized by precipitation polymerization,using phenyl ether biphenyl,a structural analogue of pyrethroids as the pseudo template.The optimal conditions for synthesis were as follows:the ratio of template molecule(phenyl ether biphenyl),functional monomer(4 vinylpyidine) and cross linker(ethylene dimethacrylate) was 1∶6∶20,the reaction temperature was 70 ℃and the amount of thermal polymerization initiator was 1%.The synthesized molecularly imprinted polymers were characterized by scanning electron microscopy and their adsorption performances were determined.The maximum adsorption capacity of the polymers toward 60 μg·mL-1 diphenyl ether biphenyl eutectic was 6 041 μg·g-1.Results of the adsorption rate showed that the polymers could reach an adsorption equilibrium after 7 h.The absorption amounts of the synthesized polymers toward chlorpyrifos,bifenthrin,fenpropathrin,permethrin,cypermethrin and fenvalerate were 259,316,311,271,305 and 298 μg·g-1,while those of the non imprinted polymers were 169,188,181,183,151 and 142 μg·g-1,respectively.The selectivity of the imprinted polymers is higher than that of the non imprinted polymers.
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