具有支化結(jié)構(gòu)的新型聚酰胺的合成與表征.pdf

1、學(xué)梭代號；10532學(xué)號：S03115007密級：湖南大學(xué)碩士學(xué)位論文具有支化結(jié)構(gòu)的新型聚酰胺的合成與表征堂筑整遣厶筵蠡i連疊鼗墨爨筵蠡蓬瑟鍪i筮蕊篷夔援疆薤望焦；業(yè)燮他互堂脆童壁名夔l，氈璺王莖論瘋握套匿翹i麴鯔生生題21圜途塞簦懿星塑i縫受望壘基耋窆墨釜熬鬟曼裳圭鏖；攫建熟夔援新型結(jié)構(gòu)聚酰胺的合成與表征AbstractRecentlypolyamideswithbranchedstructure，suchashyperbranche

2、dpolyamidesanddendronizedpolyamides，havedrawntheattentionofvariousresearchgroupsbecauseoftheiruniquephysicalandchemicalcharacteristicsThebranchingarchitecturecausedtheuniquepropertiesofthesepolymers，suchasgoodsolubilityl

3、owviscosityandstrongreactivity，whichshowedgreatpotentialinawiderangeofapplicationsuchascoatings，catalysis，liquidcrystalsbiomaterialsandnanoobjectsHoweveritstillexhibitssomeproblemsinthesynthesisofthesetwokindsofpolyamide

4、sAlthoughtheA2B3approachtohyperbranchedpolyamidesholdssomemerit，suchasfacilepreparationandcommercialavailabilityofmonomers，itstillexhibitsthemajorproblemofrelationThesynthesisofdendronizedpolyamideshasproblemssuchaspoory

5、ieldandtediousmultisyntheticstepsNewstrategiesareinneedforthelargescalesynthesisofthesepolyamidesTheaimofthispaperistosolvetheproblemsinthesynthesisofhyperbranchedanddendronizedpolymers田leresearchprojectofthispaper勰follo

6、wed：11OptimizationofpreparationprocessofhyperbranchedpolyamidesbytheAzB3approach；孫FacilesynthesisofdendronizedPOlyamidesbymacromonomerapproach1TwostrategieswerecarriedouttOthesynthesisofhyperbranchedpolyamidewithoutrelat

7、ionbytheA2B3approach：1)aseriesofpolyamidesweresynthesizedbydirectpolycondensationofaliphaticandaromaticmonomers(A2andB3)inthepresenceofCDlwhichcanbcusedtoactivateacid(oramine)toformamide；2)synthesisofsolublearomaticpolya

8、midecopolymersfromA2，B3，andABmonomersThestructureofresultingpolymersandcopolymerswasconfirmedbyIR，1HNMRmeasurements，andtheconditionofthereactionWasexploredthecopolymerizationbehaviorWasreviewedtooTheresearchonthesynthesi

9、sofhyperbranchedpolyamidesusingCDIasactivatingagentshowedthattheresultingpolymerscouldbeobtainedinthismethodwithoutgelationCDIhadsomemeritsoverTPP／pyridineasfollowing：moreflexibleinreaction；morecontrollableinreaction；sim

10、pleprocessinthemodificationoffunctiongroups；simpledisposalprocedurewithlowpoisonTheresearchonthesynthesisofpolyamidecopolymersshowedthatthegelationwasdeclinedbytheadditionofABmonomerThestructureandpropertieswereinconsist

11、entwiththeratioofthreemonomersIRand1HNMRmeasurementsrevealedthatthecontentoftheABmonomerWasmuchlowerintheearlystageofpolymerizationItincreasedwiththeincreasingreactiontime2Facilesynthesisofdendronizedpolyamidesbymacromon