有機-無機磁性納米復合材料的制備.pdf

1、南開大學碩士學位論文有機無機磁性納米復合材料的制備姓名：鄭月娥申請學位級別：碩士專業(yè)：高分子化學與物理指導教師：閻虎生20030501墮墅查堂堡主堂堡芝蘭一————AbstractMonomerssuchastbutylacrylate(tBA)，solketalacrylate(SA)，2(dimeth)‘lamino)ethylmethacrylate(DMAEMA)wereusedthroughatomtransferradica

2、lpolymerization(ATRP)tosynthesizeaseriesofhomopolymersandcopolymers，forexample，PSA，PtBA，PtBA—b—PSA，PSAb—PDMAEMAAllthepolymerizationswerewellcontrolledwithrelativelylowpolydispersitiesindex(PDI151Molecularweights(Mn)ofPSA

3、linelyincreasedwithconversionindicatingthecharacteristicsoflivingpolymerizationMeanwhile，byHalfATRPwesynthesizedothercopolymerssuchasMeOPEGb—PSAMeOPEGb—PtBA，MeO—PEGb_PDMAEMA，MeOPEG—b[PSA—cotBA]，MeOPEGb～[PSAco—DMAEMA]etc，

4、AlloftheirPDIsweresatisfactorilylowAfterthehydrophobicPSApartandthePtBApartintheaboveachievedcopolymerswerecompletelyhydrolyzedinsomeconditionstohydrophilicPGA(GA=gIycemlacrylate)andPAA(AA=acrylicacid)parts，wegotcorrespo

5、ndingcopolymerswithgoodwatersoluability：MeO—PEG—bPAAMeO—PEG—bPDMAEMA，MeOPEG—b[PGA—co—AA]MeO—PEG—b[PGAbDMAEMA]，PGAb—PAA，PGAbPDMAEMAWhentheyareusedtocoatFe304nanoparticles，onlythelatterfourcopolymerscouldconformstablesolut

6、ions，inwhichtheFe304nanoparticlescoatedwithcopolymersformednanosphereswiththesizeofabout520nm。Inadditions，allofthesesolutionsaremorestablethanthemagneticfluidscoatedbysmallmoleculesHCl04orfCH3)4NOHwhenfacingthechangeofco

7、ncertrationofthesolutions，t11epH，andthetemperatureMoreoverthedryFe304nanoparticlescoatedwithcopolymersproducedfromallthesolutionscouldbedissolvedagaininwaterandmethylalcoh01Keywords：atomtransferradicalpolymerizations(ATR