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首页> 外文期刊>Journal of Materials Science >The fabrication of a MWNTs–polymer composite chemoresistive sensor array to discriminate between chemical toxic agents
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The fabrication of a MWNTs–polymer composite chemoresistive sensor array to discriminate between chemical toxic agents

机译：用于区分化学有毒物质的MWNTs-聚合物复合化学电阻传感器阵列的制造

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In this study, a chemoresistive sensor was fabricated by the chemical polymerization and coating of either polyaniline (PANI), poly[2-methoxy-5-(2-ethyloxy)-p-phenylenevinylene], or commercial poly(methyl methacrylate) on MWNTs. We investigated the resistance responsiveness of the multilayer samples to simulated chemical warfare agents, including dimethyl methyl phosphonate (DMMP) and dichloromethane (DCM), as well as to organic agents, such as chloroform, tetrahydrofuran, methyl-ethyl ketone, and xylene. The MWNTs–PANI film was characterized by SEM and FT-IR, and the resistivity values for the six solvents were measured at different temperatures. We observed that the MWNTs-PANI sensing film exhibited a high sensitivity, excellent selectivity, and good reproducibility to the detection of all of the aforementioned agent vapors. In addition, we used atomic force microscopy to demonstrate the MWNTs–PANI absorption of DMMP vapor, wherein the sensing film exhibited a swelling phenomenon, such that the film thickness increased from 0.8 to 1.3 μm. In addition, we used principal component analysis to evaluate the performance of the sensor in detecting DMMP, DCM, and the aforementioned organic agent vapors.
机译：在这项研究中，通过化学聚合并在MWNT上涂覆聚苯胺（PANI），聚[2-甲氧基-5-（2-乙氧基）-对亚苯基亚乙烯基]或商用聚（甲基丙烯酸甲酯）来制造化学电阻传感器。 。我们研究了多层样品对模拟化学战剂（包括二甲基甲基膦酸酯（DMMP）和二氯甲烷（DCM））以及对有机剂（如氯仿，四氢呋喃，甲基乙基酮和二甲苯）的抗药性。用SEM和FT-IR对MWNTs-PANI膜进行了表征，并在不同温度下测量了这6种溶剂的电阻率值。我们观察到，MWNTs-PANI传感膜对所有上述试剂蒸气的检测均显示出高灵敏度，出色的选择性和良好的重现性。另外，我们使用原子力显微镜证明了DMNT蒸气的MWNTs-PANI吸收，其中传感膜表现出溶胀现象，使得膜厚度从0.8微米增加到1.3微米。此外，我们使用主成分分析来评估传感器在检测DMMP，DCM和上述有机试剂蒸气中的性能。

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