| 对硝基甲苯分子印迹聚合物微球的制备及性能 |
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| 引用本文： | 石启英,杨威,李仲谨.对硝基甲苯分子印迹聚合物微球的制备及性能[J].商洛学院学报,2011,25(4):42-45. |
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| 作者姓名： | 石启英 杨威 李仲谨 |
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| 作者单位： | 1. 商洛学院化学与化学工程系,陕西商洛,726000
2. 陕西科技大学化学与化工学院／教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 |
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| 基金项目： | 商洛市科研攻关计划项目(SKJ2010-09); 国家自然科学基金项目(50573046) |
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| 摘 要： | 以β-环糊精(β-CD)为单体,对硝基甲苯为模型分子,环氧氯丙烷(ECH)为交联剂,用反相乳液法合成了聚合物微球,经索氏提取器洗脱掉对硝基甲苯后制得分子印迹β-环糊精聚合物微球(MI-β-CDPMs)。利用静态吸附方法对MI-β-CDPMs的吸附性能和Scatchard曲线分析进行研究,结果表明:球状MI-β-CDPMs对水溶液中的对硝基甲苯分子有高负载量和高效识别性;高亲和位点的解离常数为Kd1=12.4069mmol/L,最大表观结合量Qmax1=3.5794mmol/g,低亲和位点的解离常数为Kd2=55.096mmol/L,最大表观结合量Qmax2=10.8893mmol/g。
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| 关 键 词： | 分子印迹技术 β-环糊精聚合物微球 对硝基甲苯 索氏提取 |
Preparation and Properties of Molecular Imprinted Polymer Microspheres of p-nitrotoluene |
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| SHI Qi-ying,YANG Wei,LI Zhong-jin.Preparation and Properties of Molecular Imprinted Polymer Microspheres of p-nitrotoluene[J].Journal of Shangluo University,2011,25(4):42-45. |
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| Authors: | SHI Qi-ying YANG Wei LI Zhong-jin |
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| Institution: | SHI Qi-ying1,YANG Wei2,LI Zhong-jin2 (1.Chemistry and Chemical Engineering Department of Shangluo University,Shangluo,Shaanxi 726000,2.Shaanxi University of Science & Technology/Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Xi'an,Shaanxi 710021) |
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| Abstract: | Molecularly imprinted β-cyclodextrin polymeric microspheres（MI-β-CDPMs） were prepared in inverse emulsion with β-cyclodextrin as material,p-nitrotoluene as template molecules and epichlorohydrin as crosslinking agent by soxhlet extraction.The adsorption characteristics of the MI-β-CDPMs and the Scatchard plot were studied by the method of static adsorption.The result indicated that MI-β-CDPMs showed high load,affinity and selectivity for the template molecules in aqueous solution.The calculated dissociation constant Kmax1 and apparent maximum number Qmax2 of binding sites with high affinity were 12.4069mmol/L and 3.5794mmol/g respectively,while Kd2 and Q of binding sites with low affinity were 55.096mmol/L and 10.8893mmol/g. |
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| Keywords: | molecular imprinting technique β-Cyclodextrin polymer microspheres p-nitrotoluene soxhlet extraction |
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