基于导电聚合物的QCM气敏传感器研究

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1、浙江大学生物医学工程与仪器科学学院博士学位论文基于导电聚合物的QCM气敏传感器研究姓名：郑俊褒申请学位级别：博士专业：生物医学工程指导教师：李光20080501浙江大学博士学位论文AbstractAsaconvenientmethodtodetectgases，gassellsorsarewidelyusedinmanyfields，such鹊environmentmonitoring,industryandagricultureproduction,foodsafety，medicaldiagnosis，militaryandpublicsafety．Combini

2、nggassensorarrays1Ⅳitllartificialintelligence，artificialolfactionsystemsovercometheshortcomingsofsinglegassensor，expandtheusageofgas8erlsorsandrequiremuchimprovementontheperfonmacesofgassensors．Therefore，itisveryimportanttoresearchanddevelopthegasSfflISOF8、)l，itllhighsensitivity，shortre

3、sponsetime，goodrepeatability,smallvolume，lowoperatingtemperatureandpowerconsumption．ThisthesisreviewedtheresearchOilgassensors，andcompareddifferentkindsofgassensorsfromtheviewpo砬ofsensingmaterialanddetectingmethod．Tomeettheurgentdemandsofdetectingoftrimethylamineinf．00dassay，environment

4、monitoringandmedicaldiagnosis，thisthesisstudiedsomegassensol冬basedonconductingpolymerandQCM(QuartzCrystalMicrobalance)technology．．Afterintroductingtheprinciple，configurationandcharacteristicsofQCM,theauthordevelopedalowcostQCMtestingsystemtoinvestigatetheperformancesoftheSe埴lsorsinallla

5、terexperiments．Secondly，theauthorpreparedpolypyrroleusingemulsionpolymerizationmethodaswell弱watersolublepolyanilinebyaddingasmallamountofsurfactant．Bothknidsofmaterialsareused豳sensingfilmofQCMtrimethylaminegassensors，respectively．Thesensitivity，responsetime，recovertime，repeatability，sel

6、ectivityandlife—spanofthesesensorswereinvestigated．Theresultsshowthatthesesensorsworkstablyatroomtemperature．ThemethodtopreparetheseQCMgassensol'shasmanyadvantages，such罄easyoperation,nostrictconditionrequirement，rapidfabricationandlowcost．Furthermore，polyaniline—Ti02nanocompositeWasprep

7、aredwithchemicaloxidemethodbyaddingasmallamountofTi02sol-gel，andtheeffectofTi02nano-particleongassensingperformanceofpolyanilineinvestigated．TheExperimentalresultsii浙江大学博士学位论文Abstractshownthatpolyaniline-Ti02nanocompositehadbetterthermalresistancethan晡协te：rsolublepolyaniline．Th