Development of a plasticizer-poly(methyl methacrylate) membrane for sensing petroleum hydrocarbons in water

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White, Cameron; Pejcic, Bobby ORCID ID icon; Myers, Matt; Qi, Xiubin


2014-03-31


Journal Article


Sensors & Actuators B Chemical


193


70-77


A quartz crystal microbalance (QCM) sensor based on a poly(methyl methacrylate) (PMMA) film has been developed for the detection of aromatic hydrocarbons (i.e., benzene, toluene, ethylbenzene, p-xylene and naphthalene) in aqueous solutions. The PMMA was modified by introducing a plasticizer into the film and the sensing properties was studied as a function of plasticizer type and concentration. Generally, the PMMA sensitivity for hydrocarbons was shown to be higher in the presence of a plasticizer. However, it was found that some of the plasticizers (i.e., diisooctyl azelate, N-butyl stearate) exhibit much better sensitivity compared to others (i.e., methyl laurate, di-N-butyl phthalate), suggesting that the response of the PMMA film can be tailored by varying the properties of the plasticizer. The relationship between plasticizer type and hydrocarbon sensitivity was investigated and this revealed that the size/molecular weight of the plasticizer molecule plays a significant role. Linear discriminant analysis (LDA) was performed to determine if the QCM sensor array comprising plasticizer-PMMA films are suitable for distinguishing between the various aromatic hydrocarbons.


Elsevier


Quartz crystal microbalance; Hydrocarbon sensor; Poly(methyl methacrylate); Plasticizer; Petroleum; Multivariate analysis


Sensor Technology (Chemical aspects)


https://doi.org/10.1016/j.snb.2013.11.095


Crown Copyright © 2013 Published by Elsevier B.V. All rights reserved.


EP137978


Journal article - Refereed


English


White, Cameron; Pejcic, Bobby; Myers, Matt; Qi, Xiubin. Development of a plasticizer-poly(methyl methacrylate) membrane for sensing petroleum hydrocarbons in water. Sensors & Actuators B Chemical. 2014; 193:70-77. https://doi.org/10.1016/j.snb.2013.11.095



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