MMTCA recognition by molecular imprinting in interpenetrating polymer network hydrogels based on poly(acrylic acid) and poly(vinyl alcohol).
A novel IPN hydrogel designed to recognize MMTCA is prepared by applying the molecular-imprinting method. The IPN is characterized by FT-IR, DSC, and SEM. Langmuir analysis shows that an equal class of adsorption is formed in the hydrogel. The adsorption equilibrium constant and the maximum adsorption capacity are evaluated, and the effect of the pH on MMTCA adsorption is discussed. The selectivity of the imprinted polymer for MMTCA is studied in aqueous solutions of MMTCA/aspirin/riboflavin. The results suggest that the MMTCA-imprinted polymer shows superior selectivity for MMTCA as compared to riboflavin and aspirin. The reproducibility of the imprinted polymer to MMTCA is also studied.
Wang
Bin
B
Department of Chemistry and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.
Liu
Ming-Zhu
MZ
Liang
Rui
R
Ding
Sheng-Long
SL
Chen
Zhen-Bin
ZB
Chen
Shi-Lan
SL
Jin
Shu-Ping
SP
D000327:Adsorption; D020100:Hydrogels / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D054802:Molecular Imprinting / Q000379:methods* / Q000592:standards; D011109:Polymethacrylic Acids; D011142:Polyvinyl Alcohol; D013859:Thiocarbamates / Q000032:analysis*
D020100:Hydrogels; C511721:N-(4-methyl)phenyl-O-(4-methoxy)phenylthionocarbamate; D011109:Polymethacrylic Acids; D013859:Thiocarbamates; D011142:Polyvinyl Alcohol