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1、蘇州科技學(xué)院本科生畢業(yè)設(shè)計(jì)(論文)聚吡咯納米復(fù)合材料的制備及光電性能研究摘要將聚吡咯和納米粒子結(jié)合起來(lái)制備的復(fù)合材料兼具了導(dǎo)電高分子材料、無(wú)機(jī)半導(dǎo)體材料的優(yōu)勢(shì),與此同時(shí)這種的復(fù)合材料還具有顯著的三階非線性光學(xué)性質(zhì)。本文擬采用界面氧化聚合法制備聚吡咯膜,通過(guò)實(shí)驗(yàn)發(fā)現(xiàn)反應(yīng)的最佳溶劑為三氯甲烷,最佳的氧化劑為過(guò)硫酸銨。當(dāng)聚吡咯于過(guò)硫酸銨反應(yīng)濃度均為0.15mol/L左右時(shí)可以生成表面平整、厚度適中、力學(xué)性能較好的聚吡咯膜。通過(guò)將上述方法制備的聚吡咯膜先浸泡在醋酸鎘溶液中吸附Cd2+,最后與硫代乙酰胺處理得到PPy/CdS復(fù)合材料。本實(shí)驗(yàn)采用了探針式表面輪廓儀分析、掃描電鏡(SEM)、傅立葉紅外光譜(
2、FTIR)、X-射線衍射(XRD)、Z-掃描測(cè)試法、熱重(TG)分析等對(duì)產(chǎn)物進(jìn)行表征。結(jié)果表明,聚吡咯/硫化鎘納米復(fù)合材料上納米粒子的分布狀況及粒子大小與摻比濃度有關(guān),濃度越低分布越密、粒子直徑越小,當(dāng)聚吡咯、硫化鎘的摻雜比達(dá)到1:0.001時(shí)粒子直徑可達(dá)20nm左右。此外,復(fù)合了硫化鎘納米粒子后聚吡咯的熱穩(wěn)定性提高了33.3%。由Z-掃描結(jié)果顯示PPy/CdS具有很強(qiáng)的三階非線性特性。關(guān)鍵詞聚吡咯;CdS納米粒子;三階非線性光學(xué)性質(zhì)forthequalityofreviewsandreview.Article26threview(a)theCCRAcompliance,whethercopi
3、esofchecks;(B)whetherdoubleinvestigation;(C)submissionofprogramcompliance,investigationorexaminationofwhetherviewsareclear;(D)theborrower,guarantorloansIII蘇州科技學(xué)院本科生畢業(yè)設(shè)計(jì)(論文)PreparationandthePhotoelectricPropertiesofPolypyrroleNanocompositesAbstractPolypyrroleandnanoparticlespreparedinpolymernano-comp
4、ositecombinationofmaterialscanbeintegratedorganicandinorganicmaterialadvantages,thethird-ordernonlinearopticalpropertiesofpolymernanocompositessignificant.Thispaperwaspreparedbytheinterfacialoxidationpolymerizationpolypyrrolefilm,throughexperimentsfoundthatthebestsolventforthereactionofchloroform,th
5、ebestoxidizingagentisammoniumpersulfate.Whenpolypyrrolepolypyrrolereactiontoammoniumpersulfateconcentrationwas0.15mol/Lcanbegeneratedwhenthesurfaceroughnessofaboutmoderatethickness,goodmechanicalproperties.BypolypyrrolefilmpreparedabovewassoakedinasolutionofcadmiumacetateadsorptionCd2+,andfinallytre
6、atedwiththioacetamidegetPPy/CdScomposites.Theexperimentusesaprobetypesurfaceprofileranalysis,SEM,FTIR,XRD,Z-scantestmethod,TG,analysisandUVabsorptionspectroscopyTheproductswerecharacterized.Theresultsshowedthatpolypyrrole/CdSnanocompositesonthedistributionofnanoparticlesandparticlesizedopedthanconce
7、ntration,thelowertheconcentrationdistributionofthedensity,thesmallertheparticlediameter,whenpolypyrrole,CdSdopingratioof1:particlediameterofabout0.001upto20nm.AlsocompositeCdSnanoparticlespolypyrrolea