含氟嵌段共聚物乳液的制備及性能研究

1、山東輕工業(yè)學(xué)院碩士學(xué)位論文含氟嵌段共聚物乳液的制備及性能研究姓名：孫仁生申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：崔月芝20090609ABSTRACTDiblockcopolymerwithlowerpolydispersityindexandwell—definedstructurewillhavespecialmicrophaseandphysical—chemicalproperties，itmaybebecomenewpoly

2、mermaterialswithspecialpropertiesandapplicationvaluesFluorinatedpolymershavehighthermalstabilitysuperbchemicalresistanceandexcellentsurfacechemicalpropertiesReversibleaddition—fragmentationchaintransfer(RAFT)polymerizati

3、onisthelastoftheliving／controlledfreeradicalpolymerizationtechniquesIthasbecomeoneofthefastestpointsinpolymerchemistryTheRAFTpolymerizationhasmanyadvantages，suchaslargervarietyofmonomers，themildreactionconditionsandvarie

4、tymethodforpolymerizingItisagoodwaytosynthesiswelldefinedpolymersFluorinatedacrylicblockcopolymerslatexhasbeensynthesizedbyRAFTpolymerizationundertowdifficultconditions，theoneistraditionalemulsionpolymerization，theotheri

5、sbulkemulsionpolymerizationIntraditionalemulsionpolymerization，polymerizationtemperature，theconcentrationsofinitiatorandchaintransferagentwereinvestigatedTheoptimalreactionconditionsweredeterminedTheresultsindicatedthatt

6、hepolymerizationsundertakingRAFTpolymerizationmechanismexhibited“l(fā)iving’／controlledpolymerizationcharacteristics：thelinearkineticplots，theexperimentalmolecularweightsincreasinglinearlywithmonomerconversionandbeingcloseto

7、thetheoreticalones，narrowpolydispersities(15)Thenseedemulsionpolymerizationwereusedtosynthesizefluorinatedacrylicblockcopolymers，buttheresultshowthatthesynthesiswasunsuccessfulAfterthebulkpolymerizationofbutylacrylate(BA

8、)，thispaperistopresentaneasyreliableabinitio，emulsifier—free，controlledfreeradicalemulsionpolymerizationprocessviaRAFTinwhichsodiumacrylateisusedasawatersolubleioniccomonomerallowingthestabilizertobecreatedinsitubycopoly

9、merizationwiththemainmonomerThesecondpolymerizationstepproceededquiterapidlywhenthesecondcomonomerwasaddedThemolarmasseswereclosetotheexpectedvalues，andpolymerchainswerecontinuouslygrowingasillustratedbytheGelPermeationC