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Reference type: Journal
Authors: Liu ZH, Lv YK, Gao JG, Li XL, Zhai XF, Zhao JH, Xu XJ
Article Title: Molecularly imprinted poly(MAA-co-AM) composite membranes for selective recognition of nicosulfuron herbicide.
Publication date: 2012
Journal: Journal of Applied Polymer Science
Volume: 126
Issue: (4)
Page numbers: 1247-1256.
DOI: 10.1002/app.36938

Abstract: Molecularly imprinted membranes with different ratio of acrylamide (AM) versus methacrylic acid (MAA) were prepared by photocopolymerization on commercial filter paper using nicosulfuron as the template. The structures, the thermal stability, and the morphology of membranes were characterized by infrared spectroscopy (IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM), respectively. Static equilibrium binding and competitive recognition properties of the membranes to nicosulfuron and its analogs (pyrazosulfuron ethyl and bensulfuron methyl) were tested. The results showed that nicosulfuron-imprinted membranes had the best recognition capacity to nicosulfuron compared with its analogs. The biggest selectivity factors of αN1/P2 and αN1/B3 were 1.28 and 1.83 and the imprinted factor reached to 2.34. The results of this study implied that the molecularly imprinted composite membranes could be used as separation membranes for nicosulfuron enrichment. The Scatchard plot revealed that one class of binding sites was mainly produced in the imprinted composite membrane in the studied concentration range of nicosulfuron. 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Template and target information: nicosulfuron
Author keywords: molecularly imprinted polymer, composite membrane, selective recognition, Nicosulfuron, sulfonylurea herbicides


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