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Computer simulation aided preparation of molecularly imprinted polymers for separation of bilobalide.
Journal of Molecular Modeling ( IF 2.2 ) Pub Date : 2020-07-06 , DOI: 10.1007/s00894-020-04460-y
Xusheng Huang 1 , Wencheng Zhang 1 , Zeyu Wu 1 , Honghong Li 1 , Chengying Yang 1 , Wanru Ma 1 , Ailing Hui 1 , Qingmei Zeng 1 , Baoyi Xiong 1 , Zhaojun Xian 1
Affiliation  

In this study, the preparation of molecularly imprinted polymers for bilobalide (BBMIPs) was successfully achieved by bulk polymerization with methacrylamide (MAM), trimethylolpropane triacrylate (TMPTA), and acetonitrile (ACN) as functional monomer, cross-linker, and solvent, respectively. After Gaussian software simulation and single factor experiments, the prepared MIPs with a molar ratio of 1:4:15 for BB-MAM-TMPTA were systematically characterized. The hydrogen bonding interaction between BB and MAM was confirmed by a combination of FTIR and NMR analysis. Thermal gravimetric analysis results displayed that MIPs have excellent thermal stability under high temperature. Additionally, the average pore size and surface area of MIPs were found to be higher than those of NIPs through nitrogen adsorption results. The results of static adsorption and kinetic adsorption suggested that the adsorption equilibrium concentration was 0.6 mg/mL and the equilibrium time was 5 h, and the Langmuir and pseudo-second-order kinetic models were proven to fit with static and kinetic adsorption behaviors, respectively. Meanwhile, the selective adsorption study revealed that MIPs show high adsorption and great selectivity towards BB in comparison with other substances having similarly structure. MIPs also possessed a good performance on reusability, maintaining a high recovery rate after being reused 5 times. The application experiment further indicated that MIPs can effectively separate BB from low purity samples. Therefore, the prepared MIPs had a great potential for BB separation.

中文翻译:

计算机模拟辅助分子印迹聚合物的制备以分离白果内酯。

在这项研究中,通过分别以甲基丙烯酰胺(MAM),三羟甲基丙烷三丙烯酸酯(TMPTA)和乙腈(ACN)作为功能单体,交联剂和溶剂的本体聚合成功地制备了用于胆白质内酯(BBMIPs)的分子印迹聚合物。 。经过高斯软件模拟和单因素实验,系统地表征了所制备的BB-MAM-TMPTA摩尔比为1:4:15的MIP。FTIR和NMR分析相结合,证实了BB和MAM之间的氢键相互作用。热重分析结果表明,MIP在高温下具有出色的热稳定性。另外,通过氮吸附结果,发现MIP的平均孔径和表面积高于NIP的平均孔径和表面积。静态吸附和动态吸附的结果表明,吸附平衡浓度为0.6 mg / mL,平衡时间为5 h,Langmuir和伪二级动力学模型分别被证明符合静态和动态吸附行为。 。同时,选择性吸附研究表明,与其他具有类似结构的物质相比,MIPs具有较高的吸附性和对BB的选择性。MIP在可重复使用性方面也具有良好的性能,在重复使用5次后仍保持较高的恢复率。应用实验进一步表明,MIP可以有效地将BB与低纯度样品分离。因此,制备的MIP具有很大的BB分离潜力。6 mg / mL,平衡时间为5 h,Langmuir和拟二级动力学模型分别被证明与静态和动态吸附行为相适应。同时,选择性吸附研究表明,与其他具有类似结构的物质相比,MIPs具有较高的吸附性和对BB的选择性。MIP在可重复使用性方面也具有良好的性能,在重复使用5次后仍保持较高的恢复率。应用实验进一步表明,MIP可以有效地将BB与低纯度样品分离。因此,制备的MIP具有很大的BB分离潜力。6 mg / mL,平衡时间为5 h,Langmuir和拟二级动力学模型分别被证明与静态和动态吸附行为相适应。同时,选择性吸附研究表明,与其他具有相似结构的物质相比,MIPs具有较高的吸附性和对BB的选择性。MIP在可重复使用性方面也具有良好的性能,在重复使用5次后仍保持较高的恢复率。应用实验进一步表明,MIP可以有效地将BB与低纯度样品分离。因此,制备的MIP具有很大的BB分离潜力。选择性吸附研究表明,与其他具有类似结构的物质相比,MIPs对BB的吸附性高,选择性高。MIP在可重复使用性方面也具有良好的性能,在重复使用5次后仍保持较高的恢复率。应用实验进一步表明,MIP可以有效地将BB与低纯度样品分离。因此,制备的MIP具有很大的BB分离潜力。选择性吸附研究表明,与其他具有类似结构的物质相比,MIPs对BB的吸附性高,选择性高。MIP在可重复使用性方面也具有良好的性能,在重复使用5次后仍保持较高的恢复率。应用实验进一步表明,MIP可以有效地将BB与低纯度样品分离。因此,制备的MIP具有很大的BB分离潜力。
更新日期:2020-07-06
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