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首页> 外文期刊>International Journal of Electrochemical Science >An Atrazine Molecularly Imprinted Polymer Synthesized Using a Cooling-Heating Method with Repeated Washing: Its Physico-chemical Characteristics and Enhanced Cavities
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An Atrazine Molecularly Imprinted Polymer Synthesized Using a Cooling-Heating Method with Repeated Washing: Its Physico-chemical Characteristics and Enhanced Cavities

机译：冷却-加热法反复洗涤合成的r去津分子印迹聚合物：其理化特性和增强的空腔

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An atrazine molecularly imprinted polymer (MIP) has been successfully produced via a cooling- heating method with repeated washing process. A template (atrazine) was incorporated into a pre- polymerization solution containing a functional monomer (methacrylic acid), a cross-linker (ethyleneglycol dimethacrylate), and an initiator (benzoyl peroxide). The pre-polymerization solution wascooled in a refrigerator at -5C for 60 min. and heated in an oven at 70C for 150 min. The templateremoval process was conducted through a repeated washing process to increase the effectiveness of thecavities formation. The FTIR spectrum of the MIP showed that the peaks of amine group decreasesignificantly, indicating that the concentration of atrazine decreases drastically. HPLC was used todetermine accurately the concentration of atrazine and the chromatogram of the MIP confirmed thatthere is no atrazine left. The repeated washing process was therefore better than the single washingprocess with 3% of atrazine left. In addition, the MIP obtained by the repeated washing process had thenumber of cavities of 780, which is higher than that produced by the single washing process asanalyzed from SEM images. From the Scatchard plots, it was found that the equilibrium dissociationconstant KD and the maximum number of binding sites Bmax, which is written as (KD; Bmax), of the MIPobtained by the repeated washing process is (7.1 M; 14.9 mmol/g), respectively. These values arehigher than those of the MIP produced by the single washing process.
机译：通过冷却-加热方法并重复洗涤过程已成功制备了at去津分子印迹聚合物（MIP）。将模板（at去津）掺入包含功能单体（甲基丙烯酸），交联剂（乙二醇二甲基丙烯酸酯）和引发剂（过氧化苯甲酰）的预聚合溶液中。将预聚合溶液在-5℃的冰箱中冷却60分钟。并在70°C的烤箱中加热150分钟。通过重复的洗涤过程进行模板去除过程，以增加腔形成的效率。 MIP的FTIR光谱显示胺基的峰显着下降，表明of去津的浓度急剧下降。 HPLC用于准确测定阿特拉津的浓度，MIP色谱图确认没有阿特拉津。因此，重复洗涤过程比仅剩3％阿特拉津的单一洗涤过程更好。另外，通过重复洗涤过程获得的MIP具有780个腔的数量，其比通过SEM图像分析的通过单个洗涤过程产生的MIP的数量更高。从斯卡查德图中，发现通过重复洗涤过程获得的MIP的平衡解离常数KD和最大结合位点数Bmax（记作（KD; Bmax））为（7.1 M; 14.9 mmol / g） ， 分别。这些值高于单次洗涤过程产生的MIP值。

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