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Reference type: Journal
Authors: Guo XW, Gao YL, Yao KJ
Article Title: Preparation and Properties of Temperature-responsive Molecularly Imprinted Polymer Hydrogels to Salicylic Acid.
Publication date: 2012
Journal: Journal of Instrumental Analysis
Volume: 31
Issue: (10)
Page numbers: 1303-1308.
Alternative URL: http://fxcsxb.com/ch/reader/view_abstract.aspx?file_no=20121016&flag=1

Abstract: A highly selective temperature-responsive molecularly imprinted polymer (MIP) hydrogel to salicylic acid (SA) was prepared by bulk polymerization at 60 C, using salicylic acid as template molecule, acrylamide as functional monomer, N-isopropyl acrylamide as temperature-responsive monomer, ethylene glycol dimethacrylate as cross-linker, and azobisisobutyronitrile as the initiator. The lower critical solution temperature (LCST) of molecularly imprinted polymer hydrogels is about 40 C. The temperature responsive molecularly imprinted polymer hydrogels showed good selectivity for SA, while non-imprinted hydrogels showed low selectivity, relative to those analogues of SA. The maximum adsorption capacity of the temperature-responsive molecularly imprinted polymer hydrogels reaches up to 6.35 mg/g, which is 3.66 times for that of non-imprinted polymer hydrogels. Compared with the molecularly imprinted polymer without adding temperature-responsive monomers, the adsorption and elution efficiency of the MIP hydrogels with SA were increased by 33.3% and 50%, respectively. Moreover, the temperature-responsive hydrogels could absorb or release SA when the temperature was changed.
Template and target information: salicylic acid, SA, 2-hydroxybenzoic acid
Author keywords: Temperature-responsive hydrogels, specific selectivity, molecularly imprinted polymer, adsorption efficiency, release time

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