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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and application of sulfadiazine surface molecularly imprinted polymers with temperature-responsive properties
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Preparation and application of sulfadiazine surface molecularly imprinted polymers with temperature-responsive properties

机译：具有温度响应特性的磺胺嘧啶表面分子印迹聚合物的制备和应用

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摘要

Novel, temperature-responsive molecularly imprinted polymers (TMIPs) based on potassium hexatitanate whiskers for selectively adsorbing sulfadiazine (SDZ) from aqueous media were prepared with methacrylic acid (MAA) and 4-vinylpyridine (4-VP) as cofunctional monomers and N-isopropyl acrylamide (NIPAM) as a temperature-responsive monomer. The template-monomer interactions were studied by molecular simulation. In particular, the effects of different kinds of crosslinkers on the selective recognition ability of the TMIPs in water media were investigated. The temperature-responsive adsorption performance and phase behavior of the molecularly imprinted polymers were studied by batch-mode binding experiments, swelling experiments, and contact angle testing. The results demonstrate that the combination of MAA, 4-VP, and NIPAM was a favorable temperature-responsive imprinted system for SDZ in water, and the cocrosslinking agent of ethylene glycol dimethacrylate (EGDMA) and N,N'-methylene bisacrylamide (MBA) was more suitable compared with either pure EGDMA or MBA. The adsorption kinetics and adsorption isotherms were analyzed by the fitting of different adsorption models. Also, the effect of the temperature on the recovery was investigated by the determination of the spiked SDZ in real-water samples with solid-phase extraction and high-performance liquid chromatography. (C) 2014 Wiley Periodicals, Inc.
机译：以甲基丙烯酸（MAA）和4-乙烯基吡啶（4-VP）作为共官能单体和N-异丙基化合物，制备了基于六钛酸钾晶须的新型温度响应分子印迹聚合物（TMIP），该聚合物可选择性地从水性介质中吸附磺胺嘧啶（SDZ）。丙烯酰胺（NIPAM）作为温度响应性单体。通过分子模拟研究了模板-单体相互作用。特别是，研究了不同种类的交联剂对水介质中TMIPs选择性识别能力的影响。通过批模式结合实验，溶胀实验和接触角测试研究了分子印迹聚合物的温度响应吸附性能和相行为。结果表明，MAA，4-VP和NIPAM的组合是水中SDZ的良好温度响应印迹系统，以及乙二醇二甲基丙烯酸酯（EGDMA）和N，N'-亚甲基双丙烯酰胺（MBA）的共交联剂与纯EGDMA或MBA相比，它更合适。通过拟合不同的吸附模型分析了吸附动力学和吸附等温线。此外，通过固相萃取和高效液相色谱法测定实际水样中的加标SDZ，研究了温度对回收率的影响。 （C）2014威利期刊公司

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