不同形貌聚吡咯的合成与表征

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1、西南交通大学硕士研究生学位论文第1I页由纯水改变为体积比为2：8的乙醇／水混合溶剂或体积比为l：9的乙腈／水混合溶剂后，产物的微观形貌均转变为颗粒状和线状共存的不规则结构，其电导率分别降低为O．24S／cm和0．38S／cm。通过本文的研究工作，制备出了分别具有颗粒状、从颗粒到薄膜渐变的微观形貌以及线状阵列结构的E．PPy、A．PPy和C．PPy三类不同微观形貌的PPy产物，并证实了上述PPy产物的微观结构变化会引起产物电导率的改变。关键词：聚吡咯；醇水比；腈水比；十六烷基三甲基溴化铵；微观形貌；电导率西南交通大学硕士研究生学位论文第1II页

2、AbstractPolypyrrole(PPy)hasgraduallybeendevelopedintoahotresearchdirectioninthefieldofconductivepolymerwithitsadvantagesofeasysynthesis，highconductivity，environmentalstability，non-toxicandSOon．Fortheconductivepolymermaterials，itisnodoubtthattheelectricalconductivityisthemai

3、ntechnicalindicatorsoftheperformance．Manypracticalapplicationofconductivepolymermaterialsisoftendirectlydependsonitsadvantagesanddisadvantagesofconductiveability，thereforeitisnecessarytocarryoutthecontrollablestudyoftheconductivityofconductivepolymer．Ithasbeenprovedasmanyre

4、searchesinbothhomeandabroadthatthemorphologyofPPyhasadirecteffecttotheconductivityofconductivepolymer．Inviewofthis，thispaperwillmainlystudythesynthesis，characterizationandconductivityofaseriesofPPywithparticle，linear，andfromtheparticlestofilmmorphology．Inthispaper，polypyrro

5、lewasfirstsynthesizedbyachemicaloxidationpolymerizationmethodaspyrrole，FeCl3andthemixtureofacetonitrileandwaterwereusedasthemonomer，oxidantandsolvent，respectively．Then，aseriesofpolypyrrolewithparticlemorphology(markedasE-PPy)weresynthesizedbychangingthevolumeratioofethylalc

6、oholtowater(noteasVREW)intherangeof0：10to7：3．TheresultsshowedthatVREWhaddirecteffecttotheconjugateddegreeofPPymolecule．FurtherstudyindicatedthattheaverageparticlesizeofPPydecreasedwiththeincreaseofVREWintherangeof0：10to7：3．However．stillwiththeincreaseofVREWintherangeof0：10t

7、o7：3，theyieldandconductivitvofPPyshowedatrendoffirstincreaseandthendecrease．Moreover，theyieldandconductivityreachedtheirmaximumvaluebothattheVREWvalueof2：8．Furthermore，aseriesofpolypyrrolewithagradualchangefromparticletofilmmorphology(markedasA-PPy)wassynthesizedbyammoniump

8、ersulfate(APS)asoxidantandthemixtureofacetonitrileandwaterassolventalsobythechemic