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9559519 
Journal Article 
PAEs同分异构体双模板分子印迹聚合物的制备及性能 
Liang, J; Xiang, B; Xiang, B; Chen, L; Zhang, H 
2020 
Harbin Institute of Technology 
52 
11 
46-52 
Chinese 
To efficiently remove phthalates (PAEs) from liquid, di(2-ethyl)hexyl phthalate (DEHP) was used as template molecule, di-n-octyl phthalate (DNOP) as auxiliary template molecule, silicon dioxide modified magnetic nano-ferric tetroxide (Fe3O4@SiO2) as carrier, alpha-methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylate (EGDMA) as crosslinking agent, and azodiisobutyronitrile (AIBN) as lead in this experiment. The bulk thermal initiation polymerization method was used to prepare double template molecularly imprinted polymers (D-MIPs) which had better adsorption performance than traditional single template molecularly imprinted polymers and could adsorb both target substances simultaneously. The specific adsorption, selectivity, and regeneration of D-MIPs were studied in detail. Results show that the introduction of the DNOP auxiliary template molecule could optimize the adsorption performance of DEHP. The unit adsorption capacity of D-MIPs for 10 DEHPs with different concentrations ranged from 0.49 mg/g to 6.16 mg/g, and the unit adsorption capacity and adsorption rate of D-MIPs were both superior to those of DEHP-MIPs. There were multi-site synergies between the two template molecules and the selected monomer, and D-MIPs could reach the optimal adsorption equilibrium state in 30 min. The adsorption capacity at the fifth time was 84.02% more than that at the first time, and it had good regeneration performance. Static adsorption process fitting indicates that the polymer system was more consistent with the single layer specific adsorption Langmuir adsorption model. The adsorption of D-MIPs and DEHP-MIPs on the target molecules was in accordance with the pseudo-second-order kinetics process. FT-IR infrared spectroscopy on the imprinted polymer characterization of the functional groups confirmed that the polymerization effect was good. Copyright ©2020 Journal of Harbin Institute of Technology.All rights reserved. 
Adsorbent experiment; Double template; Isomers; Molecular imprinting; Phthalate; Esters; Ethylene; Ethylene glycol; Infrared spectroscopy; Iron oxides; Isomers; Magnetite; Molecules; Monomers; Polymerization; Silica; Silicon oxides; Adsorption capacities; Adsorption equilibria; Adsorption performance; Ethylene glycol dimethacrylate; Langmuir adsorption model; Molecularly Imprinted Polymer; Pseudo second order kinetics; Regeneration performance; Adsorption