季銨鹽Gemini表面活性劑的合成及表面活性的研究.pdf

1、南京理工大學(xué)碩士學(xué)位論文季銨鹽Gemini表面活性劑的合成及表面活性的研究姓名：遲波申請學(xué)位級(jí)別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：呂春緒葉志文20040301AbstractBecausesurfactantsplayaveryimportantroleinindustryandagricultureproductionanddailylifeexploringnovelsurfactantsWithhighsurfaceactivityi

2、s眥importantthesistoresearchWalrkersAtpresent，akindofnovelsurfaetantoligomeriesurfactantwhichhavehighsurfaceactivityhavebecomeoneoffocusonsurfactantresearchAtypicalexampleofthemisdimericorGeminisurfactantQuaternaryammoniu

3、mGeminisurfactantsexhibitpeculiarpropertiesbecauseofitsnovelmolecularstructureInthispaper，throughaseriesofexperiments，twoseriesofquaternaryammoniumGeminisurfaetantsweresynthesizedTheircriticalmicelleconcentration(cmc)val

4、ues，thesurfacetensionattheiremc(Ycmc)values，theefficiencyofdecreasingthesurfacetension(Ca0)andthemicelleaggregationnumberweremeasured；andthefactoraffected也eresultswerealsodiscussedThepropertiesofthesystemoftl2一S—C12。2Br／

5、SDShavebeeninvestigatedMeanwhiletheuseofC2S—Clz2BrwasdiscussedinthiSpaperThemainresultsareasfollOWS：iTwoseriesofquaternary—ammoniumGeminisurfactantshavebeensynthesizedwithItheirstructurestestifiedTheoptimizedmethodsofsyn

6、thesisweredeterminedbydiscussingthefactorsaffectingreactions2Theircriticalmicelleconcentration(cmc)values，thesurfacetensionattheircmc(Ycme)valuesandtheefficiencyofdecreasingthesurfacetension(C20)ofthetWOseriessurfactants

7、weremeasuredResultsshowthat：GeminisurfactantshavemuchlowercmcandstrongersurfaceactivitycomparingwiththecorrespondingcoInlnonsurfactants3Theexcessabsorptionamountatsurfaceandtheareaofmoleculewerediscussed。AconclusionCanbe

8、drawnthattheexcessabsorptionamountincreasesandtheareaofmoleculedecreaseswiththeincreaseofspacegroupcarbonnumberInt1efoamingpropertiesoftheGeminisurfactantssynthesizedinthispaperBhasshownexcellentfoamingqualityanditsfoamh