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Preparation and evaluation of molecularly imprinted polymer for selective recognition and adsorption of gossypol
Author(s) -
Zhi Keke,
Wang Lulu,
Zhang Yagang,
Zhang Xuemin,
Zhang Letao,
Liu Li,
Yao Jun,
Xiang Wei
Publication year - 2018
Publication title -
journal of molecular recognition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.401
H-Index - 79
eISSN - 1099-1352
pISSN - 0952-3499
DOI - 10.1002/jmr.2627
Subject(s) - adsorption , gossypol , molecularly imprinted polymer , freundlich equation , selective adsorption , polymerization , monomer , selectivity , polymer , chemistry , methacrylate , molecular imprinting , polymer chemistry , nuclear chemistry , chemical engineering , organic chemistry , biochemistry , engineering , catalysis
Molecularly imprinted polymers (MIPs) were designed and prepared via bulk thermal polymerization with gossypol as the template molecule and dimethylaminoethyl methacrylate as the functional monomer. The morphology and microstructures of MIPs were characterized by scanning electron microscope and Brunauer‐Emmett‐Teller surface areas. Static adsorption tests were performed to evaluate adsorption behavior of gossypol by the MIPs. It was found that adsorption kinetics and adsorption isotherms data of MIPs for gossypol were fit well with the pseudo‐second‐order model and Freundlich model, respectively. Scatchard analysis showed that heterogeneous binding sites were formed in the MIPs, including lower‐affinity binding sites with the maximum adsorption of 252 mg/g and higher‐affinity binding sites with the maximum adsorption of 632 mg/g. Binding studies also revealed that MIPs had favorable selectivity towards gossypol compared with non‐imprinted polymers. Furthermore, adsorption capacity of MIPs maintained above 90% after 5 regeneration cycles, indicating MIPs were recyclable and could be used multiple times. These results demonstrated that prepared MIPs could be a promising functional material for selective adsorption of gossypol.